[INFO] fetching crate ioprio 0.2.0...
[INFO] checking ioprio-0.2.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate ioprio 0.2.0 into /workspace/builds/worker-102/source
[INFO] validating manifest of crates.io crate ioprio 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ioprio 0.2.0
[INFO] finished tweaking crates.io crate ioprio 0.2.0
[INFO] tweaked toml for crates.io crate ioprio 0.2.0 written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 nix v0.21.2
[INFO] [stderr]   Downloaded iou v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11976b486b1f541a3b3033e4f886912809b4012182f52177d7b8cc652758b492
[INFO] running `Command { std: "docker" "start" "-a" "11976b486b1f541a3b3033e4f886912809b4012182f52177d7b8cc652758b492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11976b486b1f541a3b3033e4f886912809b4012182f52177d7b8cc652758b492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11976b486b1f541a3b3033e4f886912809b4012182f52177d7b8cc652758b492", kill_on_drop: false }`
[INFO] [stdout] 11976b486b1f541a3b3033e4f886912809b4012182f52177d7b8cc652758b492
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5dd61f5a21a064be24d6e44ecd1888b992c8082f784659c923d369c9e232a2d8
[INFO] running `Command { std: "docker" "start" "-a" "5dd61f5a21a064be24d6e44ecd1888b992c8082f784659c923d369c9e232a2d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking nix v0.21.2
[INFO] [stderr]     Checking ioprio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.90s
[INFO] running `Command { std: "docker" "inspect" "5dd61f5a21a064be24d6e44ecd1888b992c8082f784659c923d369c9e232a2d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd61f5a21a064be24d6e44ecd1888b992c8082f784659c923d369c9e232a2d8", kill_on_drop: false }`
[INFO] [stdout] 5dd61f5a21a064be24d6e44ecd1888b992c8082f784659c923d369c9e232a2d8
