[INFO] fetching crate mailchecker 4.0.3...
[INFO] checking mailchecker-4.0.3 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate mailchecker 4.0.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mailchecker 4.0.3 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mailchecker 4.0.3
[INFO] finished tweaking crates.io crate mailchecker 4.0.3
[INFO] tweaked toml for crates.io crate mailchecker 4.0.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate mailchecker 4.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] e30b8f34756cd2858703fbdca0146f64021adbff2754b7d49ccba7fbfe3c9b0c
[INFO] running `Command { std: "docker" "start" "-a" "e30b8f34756cd2858703fbdca0146f64021adbff2754b7d49ccba7fbfe3c9b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e30b8f34756cd2858703fbdca0146f64021adbff2754b7d49ccba7fbfe3c9b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e30b8f34756cd2858703fbdca0146f64021adbff2754b7d49ccba7fbfe3c9b0c", kill_on_drop: false }`
[INFO] [stdout] e30b8f34756cd2858703fbdca0146f64021adbff2754b7d49ccba7fbfe3c9b0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0477bd79acc7a114cb19b8feb761f45c2df29e0046e3b75ac5b62377b8b3223e
[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" "0477bd79acc7a114cb19b8feb761f45c2df29e0046e3b75ac5b62377b8b3223e", kill_on_drop: false }`
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]     Checking pretty_assertions v0.1.2
[INFO] [stderr]     Checking mailchecker v4.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `Command { std: "docker" "inspect" "0477bd79acc7a114cb19b8feb761f45c2df29e0046e3b75ac5b62377b8b3223e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0477bd79acc7a114cb19b8feb761f45c2df29e0046e3b75ac5b62377b8b3223e", kill_on_drop: false }`
[INFO] [stdout] 0477bd79acc7a114cb19b8feb761f45c2df29e0046e3b75ac5b62377b8b3223e