[INFO] cloning repository https://github.com/withoutboats/guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/withoutboats/guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba0cad9d5e9e3b2caedfa6ac6d4826c518280862
[INFO] testing withoutboats/guessing_game against master#404c8471aba60c2d837fa728e7c729a0f52d5830 for pr-87041-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/withoutboats/guessing_game on toolchain 404c8471aba60c2d837fa728e7c729a0f52d5830
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/withoutboats/guessing_game
[INFO] finished tweaking git repo https://github.com/withoutboats/guessing_game
[INFO] tweaked toml for git repo https://github.com/withoutboats/guessing_game written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/withoutboats/guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9bf03e6038a59f43ba0251f242a4a10e11cc2236401609c9981b416d60535e3
[INFO] running `Command { std: "docker" "start" "-a" "b9bf03e6038a59f43ba0251f242a4a10e11cc2236401609c9981b416d60535e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9bf03e6038a59f43ba0251f242a4a10e11cc2236401609c9981b416d60535e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9bf03e6038a59f43ba0251f242a4a10e11cc2236401609c9981b416d60535e3", kill_on_drop: false }`
[INFO] [stdout] b9bf03e6038a59f43ba0251f242a4a10e11cc2236401609c9981b416d60535e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02ea718525defa6e819a9040ab92fc02af4b16044c4ed17bc3e7ad1d1b26f664
[INFO] running `Command { std: "docker" "start" "-a" "02ea718525defa6e819a9040ab92fc02af4b16044c4ed17bc3e7ad1d1b26f664", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `secret`
[INFO] [stdout]   --> src/secret_number/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(secret: u16) -> Secret {
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_secret`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guess`
[INFO] [stdout]   --> src/secret_number/mod.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/secret_number/mod.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Secret`
[INFO] [stdout]  --> src/secret_number/mod.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Secret {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random`
[INFO] [stdout]   --> src/secret_number/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn random() -> Secret {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/secret_number/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(secret: u16) -> Secret {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `guess`
[INFO] [stdout]   --> src/secret_number/mod.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `secret`
[INFO] [stdout]   --> src/secret_number/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn secret(&self) -> u16 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TooHigh`
[INFO] [stdout]   --> src/secret_number/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     TooHigh(u16),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TooLow`
[INFO] [stdout]   --> src/secret_number/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     TooLow(u16),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotANumber`
[INFO] [stdout]   --> src/secret_number/mod.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     NotANumber,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "02ea718525defa6e819a9040ab92fc02af4b16044c4ed17bc3e7ad1d1b26f664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02ea718525defa6e819a9040ab92fc02af4b16044c4ed17bc3e7ad1d1b26f664", kill_on_drop: false }`
[INFO] [stdout] 02ea718525defa6e819a9040ab92fc02af4b16044c4ed17bc3e7ad1d1b26f664
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24846ca5c825c5b63391065e4f6bc7cef3978b494bcf50d6c0feb1444eb5c0a3
[INFO] running `Command { std: "docker" "start" "-a" "24846ca5c825c5b63391065e4f6bc7cef3978b494bcf50d6c0feb1444eb5c0a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "24846ca5c825c5b63391065e4f6bc7cef3978b494bcf50d6c0feb1444eb5c0a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24846ca5c825c5b63391065e4f6bc7cef3978b494bcf50d6c0feb1444eb5c0a3", kill_on_drop: false }`
[INFO] [stdout] 24846ca5c825c5b63391065e4f6bc7cef3978b494bcf50d6c0feb1444eb5c0a3