[INFO] fetching crate thin-vec 0.2.14...
[INFO] checking thin-vec-0.2.14 against try#306c6aded24f02440063be828ebe601fe5eb8323 for pr-133502-3
[INFO] extracting crate thin-vec 0.2.14 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate thin-vec 0.2.14 on toolchain 306c6aded24f02440063be828ebe601fe5eb8323
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thin-vec 0.2.14
[INFO] finished tweaking crates.io crate thin-vec 0.2.14
[INFO] tweaked toml for crates.io crate thin-vec 0.2.14 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate thin-vec 0.2.14 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" "+306c6aded24f02440063be828ebe601fe5eb8323" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ccb8becba1fd83d6b6c5cf935dd2c508829f3a0ce4f8f91a9a6608688444f92
[INFO] running `Command { std: "docker" "start" "-a" "6ccb8becba1fd83d6b6c5cf935dd2c508829f3a0ce4f8f91a9a6608688444f92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ccb8becba1fd83d6b6c5cf935dd2c508829f3a0ce4f8f91a9a6608688444f92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccb8becba1fd83d6b6c5cf935dd2c508829f3a0ce4f8f91a9a6608688444f92", kill_on_drop: false }`
[INFO] [stdout] 6ccb8becba1fd83d6b6c5cf935dd2c508829f3a0ce4f8f91a9a6608688444f92
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7eddcd959649cac62cd511d07e9a8a5ef1918e4e5b6c19b01cc29346e05bece
[INFO] running `Command { std: "docker" "start" "-a" "e7eddcd959649cac62cd511d07e9a8a5ef1918e4e5b6c19b01cc29346e05bece", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking thin-vec v0.2.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.177
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:2703:24
[INFO] [stdout]      |
[INFO] [stdout] 2703 |         struct Align16(u8);
[INFO] [stdout]      |                ------- ^^
[INFO] [stdout]      |                |
[INFO] [stdout]      |                field in this struct
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider removing this field
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:3430:21
[INFO] [stdout]      |
[INFO] [stdout] 3430 |         struct Elem(i32);
[INFO] [stdout]      |                ---- ^^^
[INFO] [stdout]      |                |
[INFO] [stdout]      |                field in this struct
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.38s
[INFO] running `Command { std: "docker" "inspect" "e7eddcd959649cac62cd511d07e9a8a5ef1918e4e5b6c19b01cc29346e05bece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7eddcd959649cac62cd511d07e9a8a5ef1918e4e5b6c19b01cc29346e05bece", kill_on_drop: false }`
[INFO] [stdout] e7eddcd959649cac62cd511d07e9a8a5ef1918e4e5b6c19b01cc29346e05bece