[INFO] fetching crate maildir 0.5.0...
[INFO] checking maildir-0.5.0 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate maildir 0.5.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate maildir 0.5.0 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maildir 0.5.0
[INFO] finished tweaking crates.io crate maildir 0.5.0
[INFO] tweaked toml for crates.io crate maildir 0.5.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate crates.io crate maildir 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] [stderr]   Downloaded gethostname v0.2.1
[INFO] [stderr]   Downloaded byteorder v1.2.6
[INFO] [stderr]   Downloaded memmap v0.7.0
[INFO] [stderr]   Downloaded same-file v1.0.5
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded walkdir v2.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4544515e04e64a6e8113c9b12092cb9d14d5eb30fac5dd4bab4bc8a3e763ac75
[INFO] running `Command { std: "docker" "start" "-a" "4544515e04e64a6e8113c9b12092cb9d14d5eb30fac5dd4bab4bc8a3e763ac75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4544515e04e64a6e8113c9b12092cb9d14d5eb30fac5dd4bab4bc8a3e763ac75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4544515e04e64a6e8113c9b12092cb9d14d5eb30fac5dd4bab4bc8a3e763ac75", kill_on_drop: false }`
[INFO] [stdout] 4544515e04e64a6e8113c9b12092cb9d14d5eb30fac5dd4bab4bc8a3e763ac75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d363d8cfcaceff7919f86eb46fbfc82ec6f817987c4ce34f7017e525fd0f7dd1
[INFO] running `Command { std: "docker" "start" "-a" "d363d8cfcaceff7919f86eb46fbfc82ec6f817987c4ce34f7017e525fd0f7dd1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling encoding_rs v0.8.20
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking quoted_printable v0.4.2
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking charset v0.1.2
[INFO] [stderr]     Checking mailparse v0.13.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking maildir v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.88s
[INFO] running `Command { std: "docker" "inspect" "d363d8cfcaceff7919f86eb46fbfc82ec6f817987c4ce34f7017e525fd0f7dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d363d8cfcaceff7919f86eb46fbfc82ec6f817987c4ce34f7017e525fd0f7dd1", kill_on_drop: false }`
[INFO] [stdout] d363d8cfcaceff7919f86eb46fbfc82ec6f817987c4ce34f7017e525fd0f7dd1