[INFO] fetching crate thin-vec 0.2.14...
[INFO] building thin-vec-0.2.14 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate thin-vec 0.2.14 into /workspace/builds/worker-0-tc2/source
[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate thin-vec 0.2.14 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03a514db607b65474150aae23148c62bca78bedd92112df26c8a09f77f5b78ea
[INFO] running `Command { std: "docker" "start" "-a" "03a514db607b65474150aae23148c62bca78bedd92112df26c8a09f77f5b78ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03a514db607b65474150aae23148c62bca78bedd92112df26c8a09f77f5b78ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a514db607b65474150aae23148c62bca78bedd92112df26c8a09f77f5b78ea", kill_on_drop: false }`
[INFO] [stdout] 03a514db607b65474150aae23148c62bca78bedd92112df26c8a09f77f5b78ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af12b8585fed2bd70b2ba88861703ce57054cb20b14d774fbc1d48c7dea0b736
[INFO] running `Command { std: "docker" "start" "-a" "af12b8585fed2bd70b2ba88861703ce57054cb20b14d774fbc1d48c7dea0b736", kill_on_drop: false }`
[INFO] [stderr]    Compiling thin-vec v0.2.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "af12b8585fed2bd70b2ba88861703ce57054cb20b14d774fbc1d48c7dea0b736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af12b8585fed2bd70b2ba88861703ce57054cb20b14d774fbc1d48c7dea0b736", kill_on_drop: false }`
[INFO] [stdout] af12b8585fed2bd70b2ba88861703ce57054cb20b14d774fbc1d48c7dea0b736
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b155aea7e02a7822aa40b0b1d1338d2690f866a59dd51d975334b3e058b37a5b
[INFO] running `Command { std: "docker" "start" "-a" "b155aea7e02a7822aa40b0b1d1338d2690f866a59dd51d975334b3e058b37a5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_test v1.0.177
[INFO] [stderr]    Compiling thin-vec v0.2.14 (/opt/rustwide/workdir)
[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]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.84s
[INFO] running `Command { std: "docker" "inspect" "b155aea7e02a7822aa40b0b1d1338d2690f866a59dd51d975334b3e058b37a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b155aea7e02a7822aa40b0b1d1338d2690f866a59dd51d975334b3e058b37a5b", kill_on_drop: false }`
[INFO] [stdout] b155aea7e02a7822aa40b0b1d1338d2690f866a59dd51d975334b3e058b37a5b