[INFO] crate x11-input-mirror 0.3.6 is already in cache
[INFO] extracting crate x11-input-mirror 0.3.6 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/x11-input-mirror/0.3.6
[INFO] extracting crate x11-input-mirror 0.3.6 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/x11-input-mirror/0.3.6
[INFO] validating manifest of x11-input-mirror-0.3.6 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of x11-input-mirror-0.3.6 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing x11-input-mirror-0.3.6
[INFO] finished frobbing x11-input-mirror-0.3.6
[INFO] frobbed toml for x11-input-mirror-0.3.6 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/x11-input-mirror/0.3.6/Cargo.toml
[INFO] started frobbing x11-input-mirror-0.3.6
[INFO] finished frobbing x11-input-mirror-0.3.6
[INFO] frobbed toml for x11-input-mirror-0.3.6 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/x11-input-mirror/0.3.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking x11-input-mirror-0.3.6 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/x11-input-mirror/0.3.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a96b67544695b42d4751ec04ef1ed3e1ff6774246fc14ef9756cdd43c1378b2d
[INFO] running `"docker" "start" "-a" "a96b67544695b42d4751ec04ef1ed3e1ff6774246fc14ef9756cdd43c1378b2d"`
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking keystream v1.0.0
[INFO] [stderr]     Checking chacha v0.3.0
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking x11-input-mirror v0.3.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/connector.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let mut conn = conn;
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `int_to_from_bytes` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(int_to_from_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/encryption.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             chacha.xor_read(dest).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/keyboard_reset.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Command::new("numlockx").arg("on").status().is_ok();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/connector.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let mut conn = conn;
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `int_to_from_bytes` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(int_to_from_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/encryption.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             chacha.xor_read(dest).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/keyboard_reset.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Command::new("numlockx").arg("on").status().is_ok();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/bin/server.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         handle.join().is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/bin/server.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         handle.join().is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.09s
[INFO] running `"docker" "inspect" "a96b67544695b42d4751ec04ef1ed3e1ff6774246fc14ef9756cdd43c1378b2d"`
[INFO] running `"docker" "rm" "-f" "a96b67544695b42d4751ec04ef1ed3e1ff6774246fc14ef9756cdd43c1378b2d"`
[INFO] [stdout] a96b67544695b42d4751ec04ef1ed3e1ff6774246fc14ef9756cdd43c1378b2d