[INFO] cloning repository https://github.com/MetaMuffin/metamail
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MetaMuffin/metamail" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmetamail", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmetamail'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b55805e3389ee7767aa3efa0c4f4b93fbef47300
[INFO] checking MetaMuffin/metamail against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmetamail" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MetaMuffin/metamail on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MetaMuffin/metamail
[INFO] finished tweaking git repo https://github.com/MetaMuffin/metamail
[INFO] tweaked toml for git repo https://github.com/MetaMuffin/metamail written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/MetaMuffin/metamail already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 299d33c4f66e2730d2d1bcb4a6db5f29477e8911bc385ddb501861b254f0f83f
[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" "299d33c4f66e2730d2d1bcb4a6db5f29477e8911bc385ddb501861b254f0f83f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "299d33c4f66e2730d2d1bcb4a6db5f29477e8911bc385ddb501861b254f0f83f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299d33c4f66e2730d2d1bcb4a6db5f29477e8911bc385ddb501861b254f0f83f", kill_on_drop: false }`
[INFO] [stdout] 299d33c4f66e2730d2d1bcb4a6db5f29477e8911bc385ddb501861b254f0f83f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9f076560dcde9868a735d0f85d1fbfcfe02b743a001e8547772d415196645964
[INFO] running `Command { std: "docker" "start" "-a" "9f076560dcde9868a735d0f85d1fbfcfe02b743a001e8547772d415196645964", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ternop v1.0.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking lexical-core v0.7.5
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]     Checking mailin v0.4.1
[INFO] [stderr]     Checking mailin-embedded v0.5.0
[INFO] [stderr]     Checking mail-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.23s
[INFO] running `Command { std: "docker" "inspect" "9f076560dcde9868a735d0f85d1fbfcfe02b743a001e8547772d415196645964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f076560dcde9868a735d0f85d1fbfcfe02b743a001e8547772d415196645964", kill_on_drop: false }`
[INFO] [stdout] 9f076560dcde9868a735d0f85d1fbfcfe02b743a001e8547772d415196645964