[INFO] fetching crate smallbox 0.8.2...
[INFO] checking smallbox-0.8.2 against try#de0e80659cee4f27282e60d63bbb8c5271a0d147 for pr-129392
[INFO] extracting crate smallbox 0.8.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate smallbox 0.8.2 on toolchain de0e80659cee4f27282e60d63bbb8c5271a0d147
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smallbox 0.8.2
[INFO] finished tweaking crates.io crate smallbox 0.8.2
[INFO] tweaked toml for crates.io crate smallbox 0.8.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "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" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a85b6760fc408774d1ebc8a356c7a3b93e5afc64e5895521cdb02b04e2c84ad0
[INFO] running `Command { std: "docker" "start" "-a" "a85b6760fc408774d1ebc8a356c7a3b93e5afc64e5895521cdb02b04e2c84ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a85b6760fc408774d1ebc8a356c7a3b93e5afc64e5895521cdb02b04e2c84ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a85b6760fc408774d1ebc8a356c7a3b93e5afc64e5895521cdb02b04e2c84ad0", kill_on_drop: false }`
[INFO] [stdout] a85b6760fc408774d1ebc8a356c7a3b93e5afc64e5895521cdb02b04e2c84ad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef7c3c97b9610db4b1d185dbf4325c2d8429f9ef9f1f873b13fb46efc6ae1093
[INFO] running `Command { std: "docker" "start" "-a" "ef7c3c97b9610db4b1d185dbf4325c2d8429f9ef9f1f873b13fb46efc6ae1093", kill_on_drop: false }`
[INFO] [stderr]     Checking smallbox v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/smallbox.rs:538:43
[INFO] [stdout]     |
[INFO] [stdout] 538 |         struct Struct<'a>(&'a Cell<bool>, 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/smallbox.rs:562:23
[INFO] [stdout]     |
[INFO] [stdout] 562 |         struct NoDrop(S1);
[INFO] [stdout]     |                ------ ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "ef7c3c97b9610db4b1d185dbf4325c2d8429f9ef9f1f873b13fb46efc6ae1093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef7c3c97b9610db4b1d185dbf4325c2d8429f9ef9f1f873b13fb46efc6ae1093", kill_on_drop: false }`
[INFO] [stdout] ef7c3c97b9610db4b1d185dbf4325c2d8429f9ef9f1f873b13fb46efc6ae1093