[INFO] cloning repository https://github.com/cbreeden/math833_project
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cbreeden/math833_project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b651e86b4695f2883ac61eb246719128584a3258
[INFO] checking cbreeden/math833_project against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cbreeden/math833_project on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cbreeden/math833_project
[INFO] finished tweaking git repo https://github.com/cbreeden/math833_project
[INFO] tweaked toml for git repo https://github.com/cbreeden/math833_project written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/cbreeden/math833_project already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eb83e9d98ec4286e69366d47d733748f7d9bd1f1b59a25fae933a9fa2b49e54
[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" "1eb83e9d98ec4286e69366d47d733748f7d9bd1f1b59a25fae933a9fa2b49e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eb83e9d98ec4286e69366d47d733748f7d9bd1f1b59a25fae933a9fa2b49e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb83e9d98ec4286e69366d47d733748f7d9bd1f1b59a25fae933a9fa2b49e54", kill_on_drop: false }`
[INFO] [stdout] 1eb83e9d98ec4286e69366d47d733748f7d9bd1f1b59a25fae933a9fa2b49e54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb2ec0bbc85db4d99769f56cf64d8b2291fd9f86bbe97daca249784fb698ae2a
[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" "bb2ec0bbc85db4d99769f56cf64d8b2291fd9f86bbe97daca249784fb698ae2a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.22
[INFO] [stderr]     Checking gnuplot v0.0.22
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking statrs v0.6.0
[INFO] [stderr]     Checking project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Axis`
[INFO] [stdout]    --> src/markov2011.rs:124:62
[INFO] [stdout]     |
[INFO] [stdout] 124 |     use gnuplot::{Figure, Caption, Color, AutoOption, Graph, Axis};
[INFO] [stdout]     |                                                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "bb2ec0bbc85db4d99769f56cf64d8b2291fd9f86bbe97daca249784fb698ae2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb2ec0bbc85db4d99769f56cf64d8b2291fd9f86bbe97daca249784fb698ae2a", kill_on_drop: false }`
[INFO] [stdout] bb2ec0bbc85db4d99769f56cf64d8b2291fd9f86bbe97daca249784fb698ae2a