[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] d893a0360c01aa9587d41412f0671e1c24e7c997
[INFO] checking artichoke/playground against master#3e826bb11228508fbe749e594038d6727208aa94 for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartichoke%2Fplayground" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artichoke/playground on toolchain 3e826bb11228508fbe749e594038d6727208aa94
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-11/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: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d385bc0f742ea913fb709503ebfe9cd7fc2aa1f3848278a7f082ddb886511f53
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d385bc0f742ea913fb709503ebfe9cd7fc2aa1f3848278a7f082ddb886511f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d385bc0f742ea913fb709503ebfe9cd7fc2aa1f3848278a7f082ddb886511f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d385bc0f742ea913fb709503ebfe9cd7fc2aa1f3848278a7f082ddb886511f53", kill_on_drop: false }`
[INFO] [stdout] d385bc0f742ea913fb709503ebfe9cd7fc2aa1f3848278a7f082ddb886511f53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a866138c05f1a0b7902087c1068044662302e1ad1b78f9ad436f7a149640218b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a866138c05f1a0b7902087c1068044662302e1ad1b78f9ad436f7a149640218b", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.11.2
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking artichoke-core v0.7.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking scolapasta-hex v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking focaccia v1.0.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking intaglio v1.2.1
[INFO] [stderr]     Checking spinoso-array v0.5.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling cstr v0.2.8
[INFO] [stderr]     Checking scolapasta-string-escape v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking spinoso-math v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking spinoso-symbol v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking spinoso-env v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking spinoso-exception v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking spinoso-random v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking spinoso-securerandom v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling artichoke v0.1.0-pre.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking spinoso-regexp v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling artichoke-backend v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking playground v0.2.0 (/opt/rustwide/workdir/playground)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 40s
[INFO] running `Command { std: "docker" "inspect" "a866138c05f1a0b7902087c1068044662302e1ad1b78f9ad436f7a149640218b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a866138c05f1a0b7902087c1068044662302e1ad1b78f9ad436f7a149640218b", kill_on_drop: false }`
[INFO] [stdout] a866138c05f1a0b7902087c1068044662302e1ad1b78f9ad436f7a149640218b