[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] 6177df8392942a045b098cd51d8a2b2baf29b87b
[INFO] checking artichoke/playground against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartichoke%2Fplayground" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artichoke/playground on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "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-2/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" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/artichoke/artichoke.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cstr v0.2.8
[INFO] [stderr]   Downloaded target-lexicon v0.11.2
[INFO] [stderr]   Downloaded bindgen v0.57.0
[INFO] [stderr]   Downloaded intaglio v1.2.1
[INFO] [stderr]   Downloaded focaccia v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d015fc41aae2ddaf2880d5702dcb9810fe8c0ab9bc281ee3f847db2db62d733
[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" "8d015fc41aae2ddaf2880d5702dcb9810fe8c0ab9bc281ee3f847db2db62d733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d015fc41aae2ddaf2880d5702dcb9810fe8c0ab9bc281ee3f847db2db62d733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d015fc41aae2ddaf2880d5702dcb9810fe8c0ab9bc281ee3f847db2db62d733", kill_on_drop: false }`
[INFO] [stdout] 8d015fc41aae2ddaf2880d5702dcb9810fe8c0ab9bc281ee3f847db2db62d733
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 477b5a26a917a8e8dc72cd0799ef1d751db82b318567fc1cb2c43dfb75734f33
[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" "477b5a26a917a8e8dc72cd0799ef1d751db82b318567fc1cb2c43dfb75734f33", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling target-lexicon v0.11.2
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking focaccia v1.0.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking scolapasta-hex v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking artichoke-core v0.7.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[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 nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cstr v0.2.8
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]     Checking spinoso-math v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking scolapasta-string-escape 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-exception 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 rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking spinoso-securerandom v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]     Checking spinoso-random v0.1.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling artichoke v0.1.0-pre.0 (https://github.com/artichoke/artichoke.git?rev=78440472c1c0a10c8660a72664e9405da38ba6a0#78440472)
[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 32s
[INFO] running `Command { std: "docker" "inspect" "477b5a26a917a8e8dc72cd0799ef1d751db82b318567fc1cb2c43dfb75734f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477b5a26a917a8e8dc72cd0799ef1d751db82b318567fc1cb2c43dfb75734f33", kill_on_drop: false }`
[INFO] [stdout] 477b5a26a917a8e8dc72cd0799ef1d751db82b318567fc1cb2c43dfb75734f33