[INFO] crate hdlc 0.2.4 is already in cache
[INFO] extracting crate hdlc 0.2.4 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/hdlc/0.2.4
[INFO] extracting crate hdlc 0.2.4 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/hdlc/0.2.4
[INFO] validating manifest of hdlc-0.2.4 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hdlc-0.2.4 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hdlc-0.2.4
[INFO] finished frobbing hdlc-0.2.4
[INFO] frobbed toml for hdlc-0.2.4 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/hdlc/0.2.4/Cargo.toml
[INFO] started frobbing hdlc-0.2.4
[INFO] finished frobbing hdlc-0.2.4
[INFO] frobbed toml for hdlc-0.2.4 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/hdlc/0.2.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hdlc-0.2.4 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/hdlc/0.2.4:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 43d9172663a29260c5f2b36dec5a6d67ca069fdba31dc52f8fac17fce04208f8
[INFO] running `"docker" "start" "-a" "43d9172663a29260c5f2b36dec5a6d67ca069fdba31dc52f8fac17fce04208f8"`
[INFO] [stderr]     Checking hdlc v0.2.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `decode_slice`
[INFO] [stderr]  --> benches/bench.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 | use hdlc::{decode, decode_slice, encode, SpecialChars};
[INFO] [stderr]   |                    ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MyBox`
[INFO] [stderr]   --> benches/bench.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct MyBox<'a, T: 'a>(&'a mut T);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> benches/bench.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn new(x: &'a mut T) -> MyBox<'a, T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "43d9172663a29260c5f2b36dec5a6d67ca069fdba31dc52f8fac17fce04208f8"`
[INFO] running `"docker" "rm" "-f" "43d9172663a29260c5f2b36dec5a6d67ca069fdba31dc52f8fac17fce04208f8"`
[INFO] [stdout] 43d9172663a29260c5f2b36dec5a6d67ca069fdba31dc52f8fac17fce04208f8