[INFO] cloning repository https://github.com/danieldk/wordpiece-stats
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danieldk/wordpiece-stats" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieldk%2Fwordpiece-stats", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieldk%2Fwordpiece-stats'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26c971fe4e2c5d4cde6d17c3273d21112d442d21
[INFO] checking danieldk/wordpiece-stats against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieldk%2Fwordpiece-stats" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danieldk/wordpiece-stats 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 git repo https://github.com/danieldk/wordpiece-stats
[INFO] finished tweaking git repo https://github.com/danieldk/wordpiece-stats
[INFO] tweaked toml for git repo https://github.com/danieldk/wordpiece-stats written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/danieldk/wordpiece-stats 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 wordpieces v0.2.1
[INFO] [stderr]   Downloaded stdinout v0.4.0
[INFO] [stderr]   Downloaded conllu v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 68414f9088c72d31a5f84fddcf58d32871c5a9f845006374782e9add743e5ff7
[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" "68414f9088c72d31a5f84fddcf58d32871c5a9f845006374782e9add743e5ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68414f9088c72d31a5f84fddcf58d32871c5a9f845006374782e9add743e5ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68414f9088c72d31a5f84fddcf58d32871c5a9f845006374782e9add743e5ff7", kill_on_drop: false }`
[INFO] [stdout] 68414f9088c72d31a5f84fddcf58d32871c5a9f845006374782e9add743e5ff7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f7a8579953a614fb61d18eaed077c2ad929d2b71b570f53bf23f05a9aac6e62f
[INFO] running `Command { std: "docker" "start" "-a" "f7a8579953a614fb61d18eaed077c2ad929d2b71b570f53bf23f05a9aac6e62f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling cc v1.0.49
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking stdinout v0.4.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking fst v0.3.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking conllu v0.3.0
[INFO] [stderr]     Checking wordpieces v0.2.1
[INFO] [stderr]     Checking wordpiece-stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.81s
[INFO] running `Command { std: "docker" "inspect" "f7a8579953a614fb61d18eaed077c2ad929d2b71b570f53bf23f05a9aac6e62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a8579953a614fb61d18eaed077c2ad929d2b71b570f53bf23f05a9aac6e62f", kill_on_drop: false }`
[INFO] [stdout] f7a8579953a614fb61d18eaed077c2ad929d2b71b570f53bf23f05a9aac6e62f