[INFO] fetching crate thin-vec 0.2.12...
[INFO] checking thin-vec-0.2.12 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate thin-vec 0.2.12 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate thin-vec 0.2.12 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thin-vec 0.2.12
[INFO] finished tweaking crates.io crate thin-vec 0.2.12
[INFO] tweaked toml for crates.io crate thin-vec 0.2.12 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 721c7f8bd1e7c74672c5a9786d302c037051b2bb0ae5dfe7cd10be9a0f885e8a
[INFO] running `Command { std: "docker" "start" "-a" "721c7f8bd1e7c74672c5a9786d302c037051b2bb0ae5dfe7cd10be9a0f885e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "721c7f8bd1e7c74672c5a9786d302c037051b2bb0ae5dfe7cd10be9a0f885e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "721c7f8bd1e7c74672c5a9786d302c037051b2bb0ae5dfe7cd10be9a0f885e8a", kill_on_drop: false }`
[INFO] [stdout] 721c7f8bd1e7c74672c5a9786d302c037051b2bb0ae5dfe7cd10be9a0f885e8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3627829e65c1bb1eca5682af33bcd89a98e7556b0d5f96411a64e0956066b863
[INFO] running `Command { std: "docker" "start" "-a" "3627829e65c1bb1eca5682af33bcd89a98e7556b0d5f96411a64e0956066b863", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking thin-vec v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.176
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:2660:24
[INFO] [stdout]      |
[INFO] [stdout] 2660 |         struct Align16(u8);
[INFO] [stdout]      |                ------- ^^
[INFO] [stdout]      |                |
[INFO] [stdout]      |                field in this struct
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 2660 |         struct Align16(());
[INFO] [stdout]      |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:3380:21
[INFO] [stdout]      |
[INFO] [stdout] 3380 |         struct Elem(i32);
[INFO] [stdout]      |                ---- ^^^
[INFO] [stdout]      |                |
[INFO] [stdout]      |                field in this struct
[INFO] [stdout]      |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 3380 |         struct Elem(());
[INFO] [stdout]      |                     ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "3627829e65c1bb1eca5682af33bcd89a98e7556b0d5f96411a64e0956066b863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3627829e65c1bb1eca5682af33bcd89a98e7556b0d5f96411a64e0956066b863", kill_on_drop: false }`
[INFO] [stdout] 3627829e65c1bb1eca5682af33bcd89a98e7556b0d5f96411a64e0956066b863
[INFO] checking thin-vec-0.2.12 against try#9ae1860851f3fbc1435a1698e572252c0076f413 for pr-122960-1
[INFO] extracting crate thin-vec 0.2.12 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate thin-vec 0.2.12 on toolchain 9ae1860851f3fbc1435a1698e572252c0076f413
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9ae1860851f3fbc1435a1698e572252c0076f413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thin-vec 0.2.12
[INFO] finished tweaking crates.io crate thin-vec 0.2.12
[INFO] tweaked toml for crates.io crate thin-vec 0.2.12 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9ae1860851f3fbc1435a1698e572252c0076f413" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9ae1860851f3fbc1435a1698e572252c0076f413" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9ae1860851f3fbc1435a1698e572252c0076f413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5e7f86255b200b47369371c509ea30cf99f1abb40c3d0eaac416387d0d779b0
[INFO] running `Command { std: "docker" "start" "-a" "b5e7f86255b200b47369371c509ea30cf99f1abb40c3d0eaac416387d0d779b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5e7f86255b200b47369371c509ea30cf99f1abb40c3d0eaac416387d0d779b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e7f86255b200b47369371c509ea30cf99f1abb40c3d0eaac416387d0d779b0", kill_on_drop: false }`
[INFO] [stdout] b5e7f86255b200b47369371c509ea30cf99f1abb40c3d0eaac416387d0d779b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9ae1860851f3fbc1435a1698e572252c0076f413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0c472075acdceb70cd5342cce77598e47134b821a7ae7f6e2904d854d64c452
[INFO] running `Command { std: "docker" "start" "-a" "c0c472075acdceb70cd5342cce77598e47134b821a7ae7f6e2904d854d64c452", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "c0c472075acdceb70cd5342cce77598e47134b821a7ae7f6e2904d854d64c452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c472075acdceb70cd5342cce77598e47134b821a7ae7f6e2904d854d64c452", kill_on_drop: false }`
[INFO] [stdout] c0c472075acdceb70cd5342cce77598e47134b821a7ae7f6e2904d854d64c452