[INFO] fetching crate sample-4262-gowtham 0.1.0...
[INFO] checking sample-4262-gowtham-0.1.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate sample-4262-gowtham 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate sample-4262-gowtham 0.1.0
[INFO] finished tweaking crates.io crate sample-4262-gowtham 0.1.0
[INFO] tweaked toml for crates.io crate sample-4262-gowtham 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sample-4262-gowtham 0.1.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sample-4262-gowtham 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94a5a0c03d4e3f647168db7577546720efe267e4c97525fff4b8d17b0f3519ff
[INFO] running `Command { std: "docker" "start" "-a" "94a5a0c03d4e3f647168db7577546720efe267e4c97525fff4b8d17b0f3519ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94a5a0c03d4e3f647168db7577546720efe267e4c97525fff4b8d17b0f3519ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94a5a0c03d4e3f647168db7577546720efe267e4c97525fff4b8d17b0f3519ff", kill_on_drop: false }`
[INFO] [stdout] 94a5a0c03d4e3f647168db7577546720efe267e4c97525fff4b8d17b0f3519ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b886e6bc0c0be7df9ac88f7aa99d45d00693c4d84ac20f72593925f77477d99
[INFO] running `Command { std: "docker" "start" "-a" "9b886e6bc0c0be7df9ac88f7aa99d45d00693c4d84ac20f72593925f77477d99", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking memmap2 v0.9.5
[INFO] [stderr]    Compiling bytemuck_derive v1.9.3
[INFO] [stderr]     Checking bytemuck v1.23.1
[INFO] [stderr]     Checking sample-4262-gowtham v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     file.read_exact(&mut buf);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let _ = file.read_exact(&mut buf);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     file.read_exact(&mut buf);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let _ = file.read_exact(&mut buf);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "9b886e6bc0c0be7df9ac88f7aa99d45d00693c4d84ac20f72593925f77477d99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b886e6bc0c0be7df9ac88f7aa99d45d00693c4d84ac20f72593925f77477d99", kill_on_drop: false }`
[INFO] [stdout] 9b886e6bc0c0be7df9ac88f7aa99d45d00693c4d84ac20f72593925f77477d99