[INFO] fetching crate label-generator 0.3.0...
[INFO] checking label-generator-0.3.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate label-generator 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate label-generator 0.3.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate label-generator 0.3.0
[INFO] finished tweaking crates.io crate label-generator 0.3.0
[INFO] tweaked toml for crates.io crate label-generator 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate label-generator 0.3.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytemuck v1.7.3
[INFO] [stderr]   Downloaded unicode-general-category v0.4.0
[INFO] [stderr]   Downloaded xmlparser v0.13.3
[INFO] [stderr]   Downloaded ttf-parser v0.12.3
[INFO] [stderr]   Downloaded fontdb v0.7.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.6
[INFO] [stderr]   Downloaded svgtypes v0.8.0
[INFO] [stderr]   Downloaded usvg v0.20.0
[INFO] [stderr]   Downloaded memmap2 v0.5.2
[INFO] [stderr]   Downloaded mlua v0.7.3
[INFO] [stderr]   Downloaded anyhow v1.0.53
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.6
[INFO] [stderr]   Downloaded lua-src v544.0.0
[INFO] [stderr]   Downloaded libc v0.2.117
[INFO] [stderr]   Downloaded rustybuzz v0.4.0
[INFO] [stderr]   Downloaded crc32fast v1.3.1
[INFO] [stderr]   Downloaded rctree v0.4.0
[INFO] [stderr]   Downloaded unicode-script v0.5.4
[INFO] [stderr]   Downloaded kurbo v0.8.3
[INFO] [stderr]   Downloaded luajit-src v210.3.2+resty1085a4d
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 169af07c7c76845884808ced8cd3165dce79f036f4861df3d3d2d962959ee465
[INFO] running `Command { std: "docker" "start" "-a" "169af07c7c76845884808ced8cd3165dce79f036f4861df3d3d2d962959ee465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "169af07c7c76845884808ced8cd3165dce79f036f4861df3d3d2d962959ee465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "169af07c7c76845884808ced8cd3165dce79f036f4861df3d3d2d962959ee465", kill_on_drop: false }`
[INFO] [stdout] 169af07c7c76845884808ced8cd3165dce79f036f4861df3d3d2d962959ee465
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78f819672eab3cfe54753cc53ce899ede92b7b24b3b511f6985bd6fc5c7be51c
[INFO] running `Command { std: "docker" "start" "-a" "78f819672eab3cfe54753cc53ce899ede92b7b24b3b511f6985bd6fc5c7be51c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]    Compiling crc32fast v1.3.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking ttf-parser v0.12.3
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking unicode-script v0.5.4
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking unicode-ccc v0.1.2
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]     Checking unicode-bidi-mirroring v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking svgtypes v0.8.0
[INFO] [stderr]     Checking data-url v0.1.1
[INFO] [stderr]    Compiling luajit-src v210.3.2+resty1085a4d
[INFO] [stderr]    Compiling lua-src v544.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking kurbo v0.8.3
[INFO] [stderr]     Checking roxmltree v0.14.1
[INFO] [stderr]     Checking simplecss v0.2.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking pico-args v0.4.2
[INFO] [stderr]     Checking rctree v0.4.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking memmap2 v0.5.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]    Compiling mlua v0.7.3
[INFO] [stderr]     Checking fontdb v0.7.0
[INFO] [stderr]     Checking rustybuzz v0.4.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking usvg v0.20.0
[INFO] [stderr]     Checking label-generator v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.00s
[INFO] running `Command { std: "docker" "inspect" "78f819672eab3cfe54753cc53ce899ede92b7b24b3b511f6985bd6fc5c7be51c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f819672eab3cfe54753cc53ce899ede92b7b24b3b511f6985bd6fc5c7be51c", kill_on_drop: false }`
[INFO] [stdout] 78f819672eab3cfe54753cc53ce899ede92b7b24b3b511f6985bd6fc5c7be51c