Fix may not to appropriate might not or must not

1 files changed, 3 insertions, 3 deletions

diff --git a/library/std/src/backtrace.rs b/library/std/src/backtrace.rs
index f8884523cf4..9ace3e1b600 100644
--- a/library/std/src/backtrace.rs
+++ b/library/std/src/backtrace.rs
@@ -35,13 +35,13 @@
 //! `BacktraceStatus` enum as a result of `Backtrace::status`.
 //!
 //! Like above with accuracy platform support is done on a best effort basis.
-//! Sometimes libraries may not be available at runtime or something may go
+//! Sometimes libraries might not be available at runtime or something may go
 //! wrong which would cause a backtrace to not be captured. Please feel free to
 //! report issues with platforms where a backtrace cannot be captured though!
 //!
 //! ## Environment Variables
 //!
-//! The `Backtrace::capture` function may not actually capture a backtrace by
+//! The `Backtrace::capture` function might not actually capture a backtrace by
 //! default. Its behavior is governed by two environment variables:
 //!
 //! * `RUST_LIB_BACKTRACE` - if this is set to `0` then `Backtrace::capture`
@@ -61,7 +61,7 @@
 //! Note that the `Backtrace::force_capture` function can be used to ignore
 //! these environment variables. Also note that the state of environment
 //! variables is cached once the first backtrace is created, so altering
-//! `RUST_LIB_BACKTRACE` or `RUST_BACKTRACE` at runtime may not actually change
+//! `RUST_LIB_BACKTRACE` or `RUST_BACKTRACE` at runtime might not actually change
 //! how backtraces are captured.
 
 #![unstable(feature = "backtrace", issue = "53487")]