[INFO] fetching crate denim 0.1.4...
[INFO] checking denim-0.1.4 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate denim 0.1.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate denim 0.1.4 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate denim 0.1.4
[INFO] finished tweaking crates.io crate denim 0.1.4
[INFO] tweaked toml for crates.io crate denim 0.1.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate denim 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jni v0.14.0
[INFO] [stderr]   Downloaded app_dirs2 v2.3.0
[INFO] [stderr]   Downloaded assert_matches v1.3.0
[INFO] [stderr]   Downloaded os_pipe v0.9.1
[INFO] [stderr]   Downloaded cotton v0.0.13
[INFO] [stderr]   Downloaded problem v5.2.1
[INFO] [stderr]   Downloaded duct v0.13.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30a3eba1c02f561755e42c4c484810838350407ca716bb6f7ee7b5fc0ac18947
[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" "30a3eba1c02f561755e42c4c484810838350407ca716bb6f7ee7b5fc0ac18947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30a3eba1c02f561755e42c4c484810838350407ca716bb6f7ee7b5fc0ac18947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a3eba1c02f561755e42c4c484810838350407ca716bb6f7ee7b5fc0ac18947", kill_on_drop: false }`
[INFO] [stdout] 30a3eba1c02f561755e42c4c484810838350407ca716bb6f7ee7b5fc0ac18947
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2d5f987de0fd5666f14cc1b2766918775537c6c68b1ea2bab25d1ee9c7062a3
[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" "a2d5f987de0fd5666f14cc1b2766918775537c6c68b1ea2bab25d1ee9c7062a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking app_dirs2 v2.3.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking os_pipe v0.9.1
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking duct v0.13.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking shaman v0.1.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking problem v5.2.1
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking cotton v0.0.13
[INFO] [stderr]     Checking denim v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.09s
[INFO] running `Command { std: "docker" "inspect" "a2d5f987de0fd5666f14cc1b2766918775537c6c68b1ea2bab25d1ee9c7062a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2d5f987de0fd5666f14cc1b2766918775537c6c68b1ea2bab25d1ee9c7062a3", kill_on_drop: false }`
[INFO] [stdout] a2d5f987de0fd5666f14cc1b2766918775537c6c68b1ea2bab25d1ee9c7062a3