[INFO] cloning repository https://github.com/artichoke/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artichoke/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartichoke%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartichoke%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24102b77f8fd40624afff50bcfcc5e86f0f33cdc
[INFO] checking artichoke/playground against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartichoke%2Fplayground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artichoke/playground 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] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/artichoke/playground
[INFO] finished tweaking git repo https://github.com/artichoke/playground
[INFO] tweaked toml for git repo https://github.com/artichoke/playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/artichoke/playground 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]     Updating git repository `https://github.com/artichoke/artichoke.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intaglio v1.9.1
[INFO] [stderr]   Downloaded strftime-ruby v1.0.1
[INFO] [stderr]   Downloaded posix-space v1.0.4
[INFO] [stderr]   Downloaded raw-parts v2.0.0
[INFO] [stderr]   Downloaded qed v1.6.1
[INFO] [stderr]   Downloaded rand_mt v4.2.2
[INFO] [stderr]   Downloaded focaccia v1.4.0
[INFO] [stderr]   Downloaded tzdb v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 26f2fcb8549b71657c91ee8b835793b21a1817422ec8742c1fc331e795068503
[INFO] running `Command { std: "docker" "start" "-a" "26f2fcb8549b71657c91ee8b835793b21a1817422ec8742c1fc331e795068503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26f2fcb8549b71657c91ee8b835793b21a1817422ec8742c1fc331e795068503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26f2fcb8549b71657c91ee8b835793b21a1817422ec8742c1fc331e795068503", kill_on_drop: false }`
[INFO] [stdout] 26f2fcb8549b71657c91ee8b835793b21a1817422ec8742c1fc331e795068503
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 51a923b0c9dbdfd93fc7d2a02c928ac886a231dc5bb75d177ddedc665f814e85
[INFO] running `Command { std: "docker" "start" "-a" "51a923b0c9dbdfd93fc7d2a02c928ac886a231dc5bb75d177ddedc665f814e85", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling bindgen v0.69.1
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]     Checking raw-parts v2.0.0
[INFO] [stderr]     Checking posix-space v1.0.4
[INFO] [stderr]     Checking focaccia v1.4.0
[INFO] [stderr]     Checking bstr v1.9.1
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking scolapasta-string-escape v0.3.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking tz-rs v0.6.14
[INFO] [stderr]     Checking scolapasta-strbuf v1.0.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.43
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking tzdb v0.6.0
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking qed v1.6.1
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]     Checking strftime-ruby v1.0.1
[INFO] [stderr]     Checking scolapasta-aref v0.1.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking bytecount v0.6.7
[INFO] [stderr]     Checking artichoke-core v0.13.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking base64 v0.21.5
[INFO] [stderr]     Checking rand_mt v4.2.2
[INFO] [stderr]     Checking scolapasta-hex v0.3.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]    Compiling artichoke v0.1.0-pre.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-symbol v0.4.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-securerandom v0.2.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-random v0.4.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-string v0.24.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-math v0.3.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking scolapasta-int-parse v0.2.2 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-env v0.2.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-exception v0.1.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-array v0.10.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking scolapasta-path v0.5.1 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking intaglio v1.9.1
[INFO] [stderr]     Checking mezzaluna-type-registry v1.0.1 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking spinoso-regexp v0.5.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking artichoke-load-path v0.1.0 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking spinoso-time v0.7.2 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]    Compiling artichoke-backend v0.24.1 (https://github.com/artichoke/artichoke.git?rev=608e576571b07575f67c66af3f5a1f67c513a7a4#608e5765)
[INFO] [stderr]     Checking playground v0.14.0 (/opt/rustwide/workdir/playground)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.70s
[INFO] running `Command { std: "docker" "inspect" "51a923b0c9dbdfd93fc7d2a02c928ac886a231dc5bb75d177ddedc665f814e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51a923b0c9dbdfd93fc7d2a02c928ac886a231dc5bb75d177ddedc665f814e85", kill_on_drop: false }`
[INFO] [stdout] 51a923b0c9dbdfd93fc7d2a02c928ac886a231dc5bb75d177ddedc665f814e85