[INFO] fetching crate cargo-chef 0.1.20...
[INFO] checking cargo-chef-0.1.20 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate cargo-chef 0.1.20 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cargo-chef 0.1.20 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-chef 0.1.20
[INFO] finished tweaking crates.io crate cargo-chef 0.1.20
[INFO] tweaked toml for crates.io crate cargo-chef 0.1.20 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cargo-chef 0.1.20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo-manifest v0.2.4
[INFO] [stderr]   Downloaded env_logger v0.8.1
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cd9655a6f357d3472f53f82d85dd06014dd2759aa01ca02fb53be2f4aceb6d4
[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" "2cd9655a6f357d3472f53f82d85dd06014dd2759aa01ca02fb53be2f4aceb6d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cd9655a6f357d3472f53f82d85dd06014dd2759aa01ca02fb53be2f4aceb6d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd9655a6f357d3472f53f82d85dd06014dd2759aa01ca02fb53be2f4aceb6d4", kill_on_drop: false }`
[INFO] [stdout] 2cd9655a6f357d3472f53f82d85dd06014dd2759aa01ca02fb53be2f4aceb6d4
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abb9a203a6ccc0db509846d4135a3c1ec9088ab60773a32d611725ff2f338ba9
[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" "abb9a203a6ccc0db509846d4135a3c1ec9088ab60773a32d611725ff2f338ba9", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking os_str_bytes v2.3.2
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking pathdiff v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking globwalk v0.8.0
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]     Checking assert_fs v1.0.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking cargo-manifest v0.2.4
[INFO] [stderr]     Checking cargo-chef v0.1.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.18s
[INFO] running `Command { std: "docker" "inspect" "abb9a203a6ccc0db509846d4135a3c1ec9088ab60773a32d611725ff2f338ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abb9a203a6ccc0db509846d4135a3c1ec9088ab60773a32d611725ff2f338ba9", kill_on_drop: false }`
[INFO] [stdout] abb9a203a6ccc0db509846d4135a3c1ec9088ab60773a32d611725ff2f338ba9