[INFO] cloning repository https://github.com/taylorsabbag/hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taylorsabbag/hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylorsabbag%2Fhello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylorsabbag%2Fhello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 547b544dca7e532583610db3982f51468605a894
[INFO] checking taylorsabbag/hello against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylorsabbag%2Fhello" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/taylorsabbag/hello
[INFO] finished tweaking git repo https://github.com/taylorsabbag/hello
[INFO] tweaked toml for git repo https://github.com/taylorsabbag/hello written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/taylorsabbag/hello on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/taylorsabbag/hello 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" "+416264364aa47959f5827723e1d7dabc95d0744b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking taylorsabbag/hello against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylorsabbag%2Fhello" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/taylorsabbag/hello
[INFO] finished tweaking git repo https://github.com/taylorsabbag/hello
[INFO] tweaked toml for git repo https://github.com/taylorsabbag/hello written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/taylorsabbag/hello on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/taylorsabbag/hello 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" "+416264364aa47959f5827723e1d7dabc95d0744b" "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-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790
[INFO] running `Command { std: "docker" "start" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |           if size < 1 {
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 23 | |             Ok(PoolCreationError::PoolSizeIsZero);
[INFO] [stdout] 24 | |         } else {
[INFO] [stdout]    | |_________^ expected `Result<ThreadPool, PoolCreationError>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<ThreadPool, PoolCreationError>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |           if size < 1 {
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 23 | |             Ok(PoolCreationError::PoolSizeIsZero);
[INFO] [stdout] 24 | |         } else {
[INFO] [stdout]    | |_________^ expected `Result<ThreadPool, PoolCreationError>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<ThreadPool, PoolCreationError>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn build(size: usize) -> Result<ThreadPool, PoolCreationError> {
[INFO] [stdout]    |                                  ------------------------------------- expected `Result<ThreadPool, PoolCreationError>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 25 |             return ThreadPool;
[INFO] [stdout]    |                    ^^^^^^^^^^ expected `Result<ThreadPool, PoolCreationError>`, found `ThreadPool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<ThreadPool, PoolCreationError>`
[INFO] [stdout]             found struct `ThreadPool`
[INFO] [stdout] help: try wrapping the expression in `Ok`
[INFO] [stdout]    |
[INFO] [stdout] 25 |             return Ok(ThreadPool);
[INFO] [stdout]    |                    +++          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn build(size: usize) -> Result<ThreadPool, PoolCreationError> {
[INFO] [stdout]    |                                  ------------------------------------- expected `Result<ThreadPool, PoolCreationError>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 25 |             return ThreadPool;
[INFO] [stdout]    |                    ^^^^^^^^^^ expected `Result<ThreadPool, PoolCreationError>`, found `ThreadPool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<ThreadPool, PoolCreationError>`
[INFO] [stdout]             found struct `ThreadPool`
[INFO] [stdout] help: try wrapping the expression in `Ok`
[INFO] [stdout]    |
[INFO] [stdout] 25 |             return Ok(ThreadPool);
[INFO] [stdout]    |                    +++          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:29:30
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:29:30
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `hello` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790", kill_on_drop: false }`
[INFO] [stdout] 03b4178a0f8007fa2c26d1c65e63deef4bde33f7512188109cb32c666b59c790
