[INFO] cloning repository https://github.com/livingsilver94/rusty_markov
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/livingsilver94/rusty_markov" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flivingsilver94%2Frusty_markov", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flivingsilver94%2Frusty_markov'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82bbd0a5a8b2f8ac6266f88571abcb0a915a4043
[INFO] checking livingsilver94/rusty_markov against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flivingsilver94%2Frusty_markov" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/livingsilver94/rusty_markov on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/livingsilver94/rusty_markov
[INFO] finished tweaking git repo https://github.com/livingsilver94/rusty_markov
[INFO] tweaked toml for git repo https://github.com/livingsilver94/rusty_markov written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/livingsilver94/rusty_markov already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e5238e9a667e7f27641271275dd7c50a735a9705dcc3b2062db382b78f01212
[INFO] running `Command { std: "docker" "start" "-a" "5e5238e9a667e7f27641271275dd7c50a735a9705dcc3b2062db382b78f01212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e5238e9a667e7f27641271275dd7c50a735a9705dcc3b2062db382b78f01212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e5238e9a667e7f27641271275dd7c50a735a9705dcc3b2062db382b78f01212", kill_on_drop: false }`
[INFO] [stdout] 5e5238e9a667e7f27641271275dd7c50a735a9705dcc3b2062db382b78f01212
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b326244b2be459e8d8b2a212919c2b213459081bf992f41de9042c78449b37fb
[INFO] running `Command { std: "docker" "start" "-a" "b326244b2be459e8d8b2a212919c2b213459081bf992f41de9042c78449b37fb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking markov_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused implementer of `Iterator` that must be used
[INFO] [stdout]    --> src/lib.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         map.generate_from_token(&vec![KeyPosition::Beginning; 1], 10);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.91s
[INFO] running `Command { std: "docker" "inspect" "b326244b2be459e8d8b2a212919c2b213459081bf992f41de9042c78449b37fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b326244b2be459e8d8b2a212919c2b213459081bf992f41de9042c78449b37fb", kill_on_drop: false }`
[INFO] [stdout] b326244b2be459e8d8b2a212919c2b213459081bf992f41de9042c78449b37fb