[INFO] cloning repository https://github.com/tdd-starters/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tdd-starters/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftdd-starters%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftdd-starters%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fccbd56949af617629af78e4449761a8535a7b6
[INFO] building tdd-starters/rust against master#d59f06fc64844ec2073e5e888f7470989ef25ff9 for pr-119440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftdd-starters%2Frust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tdd-starters/rust on toolchain d59f06fc64844ec2073e5e888f7470989ef25ff9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tdd-starters/rust
[INFO] finished tweaking git repo https://github.com/tdd-starters/rust
[INFO] tweaked toml for git repo https://github.com/tdd-starters/rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tdd-starters/rust 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" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] building tdd-starters/rust against try#fe8f664b41f030f307cfeb6cb8c3a1419292aeed for pr-119440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftdd-starters%2Frust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tdd-starters/rust on toolchain fe8f664b41f030f307cfeb6cb8c3a1419292aeed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tdd-starters/rust
[INFO] finished tweaking git repo https://github.com/tdd-starters/rust
[INFO] tweaked toml for git repo https://github.com/tdd-starters/rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tdd-starters/rust 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" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "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] building tdd-starters/rust against try#fe8f664b41f030f307cfeb6cb8c3a1419292aeed for pr-119440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftdd-starters%2Frust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tdd-starters/rust on toolchain fe8f664b41f030f307cfeb6cb8c3a1419292aeed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tdd-starters/rust
[INFO] finished tweaking git repo https://github.com/tdd-starters/rust
[INFO] tweaked toml for git repo https://github.com/tdd-starters/rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tdd-starters/rust 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" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rstest v0.17.0
[INFO] [stderr]   Downloaded rstest_macros v0.17.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c47d456e416a2ae1306cae3e6ac8996d4732e740ffb30104c1b03d13b91b9f50
[INFO] running `Command { std: "docker" "start" "-a" "c47d456e416a2ae1306cae3e6ac8996d4732e740ffb30104c1b03d13b91b9f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c47d456e416a2ae1306cae3e6ac8996d4732e740ffb30104c1b03d13b91b9f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47d456e416a2ae1306cae3e6ac8996d4732e740ffb30104c1b03d13b91b9f50", kill_on_drop: false }`
[INFO] [stdout] c47d456e416a2ae1306cae3e6ac8996d4732e740ffb30104c1b03d13b91b9f50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11f8c5ac0694639ee41f1caf0d3e85d3373eee50ce88fae19804541095df6861
[INFO] running `Command { std: "docker" "start" "-a" "11f8c5ac0694639ee41f1caf0d3e85d3373eee50ce88fae19804541095df6861", kill_on_drop: false }`
[INFO] [stderr]    Compiling tdd-starter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]  --> src/calculator.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn evaluate(expression: &str) -> i32 {
[INFO] [stdout]   |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 0.22s
[INFO] running `Command { std: "docker" "inspect" "11f8c5ac0694639ee41f1caf0d3e85d3373eee50ce88fae19804541095df6861", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f8c5ac0694639ee41f1caf0d3e85d3373eee50ce88fae19804541095df6861", kill_on_drop: false }`
[INFO] [stdout] 11f8c5ac0694639ee41f1caf0d3e85d3373eee50ce88fae19804541095df6861
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be938ac16f1e75f72399b6183030981b9fbc7c8fc7e3a4ead2b49027ca4b42c0
[INFO] running `Command { std: "docker" "start" "-a" "be938ac16f1e75f72399b6183030981b9fbc7c8fc7e3a4ead2b49027ca4b42c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling futures-timer v3.0.2
[INFO] [stderr]    Compiling rstest_macros v0.17.0
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling rstest v0.17.0
[INFO] [stderr]    Compiling tdd-starter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]  --> src/calculator.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn evaluate(expression: &str) -> i32 {
[INFO] [stdout]   |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.79s
[INFO] running `Command { std: "docker" "inspect" "be938ac16f1e75f72399b6183030981b9fbc7c8fc7e3a4ead2b49027ca4b42c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be938ac16f1e75f72399b6183030981b9fbc7c8fc7e3a4ead2b49027ca4b42c0", kill_on_drop: false }`
[INFO] [stdout] be938ac16f1e75f72399b6183030981b9fbc7c8fc7e3a4ead2b49027ca4b42c0