[INFO] fetching crate clevel 0.1.7...
[INFO] checking clevel-0.1.7 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate clevel 0.1.7 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate clevel 0.1.7 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clevel 0.1.7
[INFO] finished tweaking crates.io crate clevel 0.1.7
[INFO] tweaked toml for crates.io crate clevel 0.1.7 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate clevel 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cbeb2dcc373b0d156f91374b87f4ef491a701202bed61041080c73365972f4c
[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" "4cbeb2dcc373b0d156f91374b87f4ef491a701202bed61041080c73365972f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cbeb2dcc373b0d156f91374b87f4ef491a701202bed61041080c73365972f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cbeb2dcc373b0d156f91374b87f4ef491a701202bed61041080c73365972f4c", kill_on_drop: false }`
[INFO] [stdout] 4cbeb2dcc373b0d156f91374b87f4ef491a701202bed61041080c73365972f4c
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f17ec9cb7a7a3b234a3dd3efbe85b21f3f4bdc697dc4fe3a80f0f20dddeebcdf
[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" "f17ec9cb7a7a3b234a3dd3efbe85b21f3f4bdc697dc4fe3a80f0f20dddeebcdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.59
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bumpalo v3.2.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.59
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking simple-matrix v0.1.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.8
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.59
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.59
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.59
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking js-sys v0.3.36
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.8
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.8
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking ron v0.5.1
[INFO] [stderr]     Checking clevel v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "f17ec9cb7a7a3b234a3dd3efbe85b21f3f4bdc697dc4fe3a80f0f20dddeebcdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f17ec9cb7a7a3b234a3dd3efbe85b21f3f4bdc697dc4fe3a80f0f20dddeebcdf", kill_on_drop: false }`
[INFO] [stdout] f17ec9cb7a7a3b234a3dd3efbe85b21f3f4bdc697dc4fe3a80f0f20dddeebcdf