[INFO] cloning repository https://github.com/tcharding/postfix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tcharding/postfix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcharding%2Fpostfix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcharding%2Fpostfix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b629db1a9cc20386883d59c30ed9de7aa991e7dc
[INFO] checking tcharding/postfix against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcharding%2Fpostfix" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tcharding/postfix on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tcharding/postfix
[INFO] finished tweaking git repo https://github.com/tcharding/postfix
[INFO] tweaked toml for git repo https://github.com/tcharding/postfix written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tcharding/postfix already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", 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] 1d79d8e46bd7f6bb9c1c3ce6c4f6c46c1a7a5aeee0680b6e50c163e0a306186a
[INFO] running `Command { std: "docker" "start" "-a" "1d79d8e46bd7f6bb9c1c3ce6c4f6c46c1a7a5aeee0680b6e50c163e0a306186a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d79d8e46bd7f6bb9c1c3ce6c4f6c46c1a7a5aeee0680b6e50c163e0a306186a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d79d8e46bd7f6bb9c1c3ce6c4f6c46c1a7a5aeee0680b6e50c163e0a306186a", kill_on_drop: false }`
[INFO] [stdout] 1d79d8e46bd7f6bb9c1c3ce6c4f6c46c1a7a5aeee0680b6e50c163e0a306186a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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] ac8faf30f0795d09a5b0b5c0413d18097c5125137be736f17ce49c865e60b92f
[INFO] running `Command { std: "docker" "start" "-a" "ac8faf30f0795d09a5b0b5c0413d18097c5125137be736f17ce49c865e60b92f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.14
[INFO] [stderr]     Checking thiserror v1.0.14
[INFO] [stderr]     Checking postfix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.99s
[INFO] running `Command { std: "docker" "inspect" "ac8faf30f0795d09a5b0b5c0413d18097c5125137be736f17ce49c865e60b92f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac8faf30f0795d09a5b0b5c0413d18097c5125137be736f17ce49c865e60b92f", kill_on_drop: false }`
[INFO] [stdout] ac8faf30f0795d09a5b0b5c0413d18097c5125137be736f17ce49c865e60b92f