[INFO] fetching crate variant-config 0.1.3...
[INFO] checking variant-config-0.1.3 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate variant-config 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate variant-config 0.1.3 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate variant-config 0.1.3
[INFO] finished tweaking crates.io crate variant-config 0.1.3
[INFO] tweaked toml for crates.io crate variant-config 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate variant-config 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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] 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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a394231005a087d56634015cd30e3bfe4b135a5ea8c3b8c0dc1c831b9f8ac5ec
[INFO] running `Command { std: "docker" "start" "-a" "a394231005a087d56634015cd30e3bfe4b135a5ea8c3b8c0dc1c831b9f8ac5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a394231005a087d56634015cd30e3bfe4b135a5ea8c3b8c0dc1c831b9f8ac5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a394231005a087d56634015cd30e3bfe4b135a5ea8c3b8c0dc1c831b9f8ac5ec", kill_on_drop: false }`
[INFO] [stdout] a394231005a087d56634015cd30e3bfe4b135a5ea8c3b8c0dc1c831b9f8ac5ec
[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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5735ee36913444b9e69a6cfeb25439b062aa36fc0095e5b61e7dcc567dfe63f8
[INFO] running `Command { std: "docker" "start" "-a" "5735ee36913444b9e69a6cfeb25439b062aa36fc0095e5b61e7dcc567dfe63f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.75.0
[INFO] [stderr]    Compiling cranelift-entity v0.75.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling target-lexicon v0.12.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.75.0
[INFO] [stderr]     Checking cranelift-bforest v0.75.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling peg-macros v0.7.0
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking peg v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking bson v1.2.2
[INFO] [stderr]    Compiling cranelift-codegen v0.75.0
[INFO] [stderr]     Checking cranelift-native v0.75.0
[INFO] [stderr]     Checking cranelift-frontend v0.75.0
[INFO] [stderr]     Checking cranelift-module v0.75.0
[INFO] [stderr]     Checking cranelift-jit v0.75.0
[INFO] [stderr]     Checking cranelift v0.75.0
[INFO] [stderr]     Checking variant-config v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.52s
[INFO] running `Command { std: "docker" "inspect" "5735ee36913444b9e69a6cfeb25439b062aa36fc0095e5b61e7dcc567dfe63f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5735ee36913444b9e69a6cfeb25439b062aa36fc0095e5b61e7dcc567dfe63f8", kill_on_drop: false }`
[INFO] [stdout] 5735ee36913444b9e69a6cfeb25439b062aa36fc0095e5b61e7dcc567dfe63f8