[INFO] fetching crate ckb-rust-std 1.0.0...
[INFO] checking ckb-rust-std-1.0.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate ckb-rust-std 1.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ckb-rust-std 1.0.0
[INFO] finished tweaking crates.io crate ckb-rust-std 1.0.0
[INFO] tweaked toml for crates.io crate ckb-rust-std 1.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ckb-rust-std 1.0.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 291a32a3e7af68b2937ecb9b61a49b996789e9194ed3881f5a38344b9adafc08
[INFO] running `Command { std: "docker" "start" "-a" "291a32a3e7af68b2937ecb9b61a49b996789e9194ed3881f5a38344b9adafc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "291a32a3e7af68b2937ecb9b61a49b996789e9194ed3881f5a38344b9adafc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291a32a3e7af68b2937ecb9b61a49b996789e9194ed3881f5a38344b9adafc08", kill_on_drop: false }`
[INFO] [stdout] 291a32a3e7af68b2937ecb9b61a49b996789e9194ed3881f5a38344b9adafc08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 890861d990fae0722bff31e5b3bed5861782c8dbbfc2ddec7fd6f384ba871980
[INFO] running `Command { std: "docker" "start" "-a" "890861d990fae0722bff31e5b3bed5861782c8dbbfc2ddec7fd6f384ba871980", kill_on_drop: false }`
[INFO] [stderr]     Checking ckb-rust-std v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `uninlined_slow_read_byte` is never used
[INFO] [stdout]     --> src/io/mod.rs:2540:4
[INFO] [stdout]      |
[INFO] [stdout] 2540 | fn uninlined_slow_read_byte<R: Read>(reader: &mut R) -> Option<Result<u8>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uninlined_slow_read_byte` is never used
[INFO] [stdout]     --> src/io/mod.rs:2540:4
[INFO] [stdout]      |
[INFO] [stdout] 2540 | fn uninlined_slow_read_byte<R: Read>(reader: &mut R) -> Option<Result<u8>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "890861d990fae0722bff31e5b3bed5861782c8dbbfc2ddec7fd6f384ba871980", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "890861d990fae0722bff31e5b3bed5861782c8dbbfc2ddec7fd6f384ba871980", kill_on_drop: false }`
[INFO] [stdout] 890861d990fae0722bff31e5b3bed5861782c8dbbfc2ddec7fd6f384ba871980