[INFO] updating cached repository mboratko/rust_std_echo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mboratko/rust_std_echo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mboratko/rust_std_echo" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/mboratko/rust_std_echo"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/mboratko/rust_std_echo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mboratko/rust_std_echo" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/mboratko/rust_std_echo"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/mboratko/rust_std_echo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bca861d08c7c9111e2c296ce47c7f8a46f279e27
[INFO] sha for GitHub repo mboratko/rust_std_echo: bca861d08c7c9111e2c296ce47c7f8a46f279e27
[INFO] validating manifest of mboratko/rust_std_echo on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mboratko/rust_std_echo on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mboratko/rust_std_echo
[INFO] finished frobbing mboratko/rust_std_echo
[INFO] frobbed toml for mboratko/rust_std_echo written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/mboratko/rust_std_echo/Cargo.toml
[INFO] started frobbing mboratko/rust_std_echo
[INFO] finished frobbing mboratko/rust_std_echo
[INFO] frobbed toml for mboratko/rust_std_echo written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/mboratko/rust_std_echo/Cargo.toml
[INFO] crate mboratko/rust_std_echo already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mboratko/rust_std_echo against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/mboratko/rust_std_echo:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b4f410541dfca8a09875b1febf52e5b20fee810fd34f092c6216cf7a974c44de
[INFO] running `"docker" "start" "-a" "b4f410541dfca8a09875b1febf52e5b20fee810fd34f092c6216cf7a974c44de"`
[INFO] [stderr]     Checking rust_std_echo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/bin/client.rs:27:48
[INFO] [stderr]    |
[INFO] [stderr] 27 |         println!("Server >>> {}", received_str.trim_right());
[INFO] [stderr]    |                                                ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/bin/server.rs:23:41
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let received_str = received_str.trim_right();
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/bin/client.rs:27:48
[INFO] [stderr]    |
[INFO] [stderr] 27 |         println!("Server >>> {}", received_str.trim_right());
[INFO] [stderr]    |                                                ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/bin/server.rs:23:41
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let received_str = received_str.trim_right();
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "b4f410541dfca8a09875b1febf52e5b20fee810fd34f092c6216cf7a974c44de"`
[INFO] running `"docker" "rm" "-f" "b4f410541dfca8a09875b1febf52e5b20fee810fd34f092c6216cf7a974c44de"`
[INFO] [stdout] b4f410541dfca8a09875b1febf52e5b20fee810fd34f092c6216cf7a974c44de