[INFO] cloning repository https://github.com/david-a-wheeler/metamath-knife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/david-a-wheeler/metamath-knife" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-a-wheeler%2Fmetamath-knife", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-a-wheeler%2Fmetamath-knife'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 448b3542ba27dfa9ecc8cf7255117907f468c00f
[INFO] checking david-a-wheeler/metamath-knife against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-a-wheeler%2Fmetamath-knife" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/david-a-wheeler/metamath-knife on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/david-a-wheeler/metamath-knife
[INFO] finished tweaking git repo https://github.com/david-a-wheeler/metamath-knife
[INFO] tweaked toml for git repo https://github.com/david-a-wheeler/metamath-knife written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/david-a-wheeler/metamath-knife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff5e5d913bb5cd4f16ca2409eb8797e19fde6dc1f769d4f5484ec7eb00f0d073
[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" "ff5e5d913bb5cd4f16ca2409eb8797e19fde6dc1f769d4f5484ec7eb00f0d073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff5e5d913bb5cd4f16ca2409eb8797e19fde6dc1f769d4f5484ec7eb00f0d073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff5e5d913bb5cd4f16ca2409eb8797e19fde6dc1f769d4f5484ec7eb00f0d073", kill_on_drop: false }`
[INFO] [stdout] ff5e5d913bb5cd4f16ca2409eb8797e19fde6dc1f769d4f5484ec7eb00f0d073
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43c0783df7658feb8708b059155c5585cdd23aa3e5d623bb379fb95712996949
[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" "43c0783df7658feb8708b059155c5585cdd23aa3e5d623bb379fb95712996949", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]     Checking winapi v0.2.7
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking ansi_term v0.7.2
[INFO] [stderr]     Checking unicode-width v0.1.3
[INFO] [stderr]     Checking strsim v0.4.1
[INFO] [stderr]     Checking regex-syntax v0.3.3
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking fnv v1.0.2
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking filetime v0.1.10
[INFO] [stderr]     Checking clap v2.5.2
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.71
[INFO] [stderr]     Checking metamath-knife v3.1.0-1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/export.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ExportError::Io(ref err) => err.description(),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/export.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ExportError::Io(ref err) => err.description(),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/verify.rs:537:17
[INFO] [stdout]     |
[INFO] [stdout] 537 | /                 process_hyp(state,
[INFO] [stdout] 538 | |                                  &mut datavec,
[INFO] [stdout] 539 | |                                  fref,
[INFO] [stdout] 540 | |                                  sbase + ix,
[INFO] [stdout] 541 | |                                  &fref.hypotheses[slot.unwrap()]);
[INFO] [stdout]     | |__________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/verify.rs:537:17
[INFO] [stdout]     |
[INFO] [stdout] 537 | /                 process_hyp(state,
[INFO] [stdout] 538 | |                                  &mut datavec,
[INFO] [stdout] 539 | |                                  fref,
[INFO] [stdout] 540 | |                                  sbase + ix,
[INFO] [stdout] 541 | |                                  &fref.hypotheses[slot.unwrap()]);
[INFO] [stdout]     | |__________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 4.80s
[INFO] running `Command { std: "docker" "inspect" "43c0783df7658feb8708b059155c5585cdd23aa3e5d623bb379fb95712996949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c0783df7658feb8708b059155c5585cdd23aa3e5d623bb379fb95712996949", kill_on_drop: false }`
[INFO] [stdout] 43c0783df7658feb8708b059155c5585cdd23aa3e5d623bb379fb95712996949