[INFO] cloning repository https://github.com/ahendriksen/n_longest_paths
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahendriksen/n_longest_paths" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahendriksen%2Fn_longest_paths", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahendriksen%2Fn_longest_paths'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ec12b8645db6616545b35ec0a757880a174d848
[INFO] checking ahendriksen/n_longest_paths/8ec12b8645db6616545b35ec0a757880a174d848 against master#f8192ba0d00bbbc58a10c45823ba010e98ea4474 for pr-130531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahendriksen%2Fn_longest_paths" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahendriksen/n_longest_paths on toolchain f8192ba0d00bbbc58a10c45823ba010e98ea4474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8192ba0d00bbbc58a10c45823ba010e98ea4474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahendriksen/n_longest_paths
[INFO] finished tweaking git repo https://github.com/ahendriksen/n_longest_paths
[INFO] tweaked toml for git repo https://github.com/ahendriksen/n_longest_paths written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ahendriksen/n_longest_paths already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8192ba0d00bbbc58a10c45823ba010e98ea4474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded npy-derive v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f8192ba0d00bbbc58a10c45823ba010e98ea4474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0fb63ddf99a7cc123286cbf12b98e85a3b8a525606b19759bb73d08dedc4175
[INFO] running `Command { std: "docker" "start" "-a" "f0fb63ddf99a7cc123286cbf12b98e85a3b8a525606b19759bb73d08dedc4175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0fb63ddf99a7cc123286cbf12b98e85a3b8a525606b19759bb73d08dedc4175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0fb63ddf99a7cc123286cbf12b98e85a3b8a525606b19759bb73d08dedc4175", kill_on_drop: false }`
[INFO] [stdout] f0fb63ddf99a7cc123286cbf12b98e85a3b8a525606b19759bb73d08dedc4175
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f8192ba0d00bbbc58a10c45823ba010e98ea4474" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d697116eae74c1963e51f23d6b17967b3c988bee883260d0dc87e9b5f5d9e181
[INFO] running `Command { std: "docker" "start" "-a" "d697116eae74c1963e51f23d6b17967b3c988bee883260d0dc87e9b5f5d9e181", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling pyo3 v0.13.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling cast v0.2.5
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking npy v0.4.0
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking pbr v1.0.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling pyo3-macros-backend v0.13.2
[INFO] [stderr]    Compiling npy-derive v0.4.0
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling pyo3-macros v0.13.2
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Checking numpy v0.13.1
[INFO] [stderr]     Checking n_longest_paths v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Path` is never constructed
[INFO] [stdout]   --> src/fast_graph.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Path {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Path` is never constructed
[INFO] [stdout]   --> src/fast_graph.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Path {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.13s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4, nom v3.2.1, pyo3 v0.13.2, pyo3-macros-backend v0.13.2, syn v0.12.15
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "d697116eae74c1963e51f23d6b17967b3c988bee883260d0dc87e9b5f5d9e181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d697116eae74c1963e51f23d6b17967b3c988bee883260d0dc87e9b5f5d9e181", kill_on_drop: false }`
[INFO] [stdout] d697116eae74c1963e51f23d6b17967b3c988bee883260d0dc87e9b5f5d9e181