[INFO] cloning repository https://github.com/aeolus3000/hello_world_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aeolus3000/hello_world_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeolus3000%2Fhello_world_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeolus3000%2Fhello_world_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a67d550a87f08bc6b18337420c79384cc915ab08
[INFO] testing aeolus3000/hello_world_rust against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeolus3000%2Fhello_world_rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aeolus3000/hello_world_rust on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aeolus3000/hello_world_rust
[INFO] finished tweaking git repo https://github.com/aeolus3000/hello_world_rust
[INFO] tweaked toml for git repo https://github.com/aeolus3000/hello_world_rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/aeolus3000/hello_world_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dccc6be70689ef6b412cd1767f06d3dd4eda6be2af2ed188e74d28e96ac7c7c9
[INFO] running `Command { std: "docker" "start" "-a" "dccc6be70689ef6b412cd1767f06d3dd4eda6be2af2ed188e74d28e96ac7c7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dccc6be70689ef6b412cd1767f06d3dd4eda6be2af2ed188e74d28e96ac7c7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dccc6be70689ef6b412cd1767f06d3dd4eda6be2af2ed188e74d28e96ac7c7c9", kill_on_drop: false }`
[INFO] [stdout] dccc6be70689ef6b412cd1767f06d3dd4eda6be2af2ed188e74d28e96ac7c7c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b92be95d852e9128ed877c79bde561a5ca284c810b137335dae5b18c597ea1aa
[INFO] running `Command { std: "docker" "start" "-a" "b92be95d852e9128ed877c79bde561a5ca284c810b137335dae5b18c597ea1aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let f = File::open("hello.txt")?;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[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 0.72s
[INFO] running `Command { std: "docker" "inspect" "b92be95d852e9128ed877c79bde561a5ca284c810b137335dae5b18c597ea1aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b92be95d852e9128ed877c79bde561a5ca284c810b137335dae5b18c597ea1aa", kill_on_drop: false }`
[INFO] [stdout] b92be95d852e9128ed877c79bde561a5ca284c810b137335dae5b18c597ea1aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e604ab5aa9849e08460ac87248b57185e046383bea4fab2d6f234ef0cfcea5
[INFO] running `Command { std: "docker" "start" "-a" "24e604ab5aa9849e08460ac87248b57185e046383bea4fab2d6f234ef0cfcea5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let f = File::open("hello.txt")?;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[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 0.61s
[INFO] running `Command { std: "docker" "inspect" "24e604ab5aa9849e08460ac87248b57185e046383bea4fab2d6f234ef0cfcea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e604ab5aa9849e08460ac87248b57185e046383bea4fab2d6f234ef0cfcea5", kill_on_drop: false }`
[INFO] [stdout] 24e604ab5aa9849e08460ac87248b57185e046383bea4fab2d6f234ef0cfcea5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 244080d5014792deb50a5ce29f7afd189eb496d21775355de089ba9337e9fed4
[INFO] running `Command { std: "docker" "start" "-a" "244080d5014792deb50a5ce29f7afd189eb496d21775355de089ba9337e9fed4", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let f = File::open("hello.txt")?;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_stack-c74e79b945936f70)
[INFO] [stdout] running 14 tests
[INFO] [stdout] test utils::piglatin::piglatin_test::an_empty_string_should_not_be_a_problem ... ok
[INFO] [stdout] test utils::piglatin::piglatin_test::consonant_string_should_be_converted_to_pig_latin ... ok
[INFO] [stdout] test utils::piglatin::piglatin_test::non_letter_starting_string_should_not_be_converted_to_pig_latin ... ok
[INFO] [stdout] test utils::stack::stack_test::a_new_stack_should_be_empty ... ok
[INFO] [stdout] test utils::stack::stack_test::popping_from_stack_should_decrement_pointer ... ok
[INFO] [stdout] test utils::stack::stack_test::popping_from_stack_should_return_correct_value ... ok
[INFO] [stdout] test utils::stack::stack_test::pushing_on_stack_should_be_visible_in_buffer ... ok
[INFO] [stdout] test utils::stack::stack_test::pushing_on_stack_should_increment_pointer ... ok
[INFO] [stdout] test utils::stack::stack_test::stack_is_empty_should_return_empty_state ... ok
[INFO] [stdout] test utils::stack::stack_test::stack_is_full_should_return_full_state ... ok
[INFO] [stdout] test utils::stack::stack_test::stack_pop_should_return_error_when_empty ... ok
[INFO] [stdout] test utils::stack::stack_test::stack_push_should_return_error_when_full ... ok
[INFO] [stdout] test utils::stack::stack_test::pushing_once_in_the_stack_results_in_expected_size ... ok
[INFO] [stdout] test utils::piglatin::piglatin_test::vocal_starting_string_should_be_converted_to_pig_latin ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_stack-5263efc07c8f1c7b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_stack
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "244080d5014792deb50a5ce29f7afd189eb496d21775355de089ba9337e9fed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "244080d5014792deb50a5ce29f7afd189eb496d21775355de089ba9337e9fed4", kill_on_drop: false }`
[INFO] [stdout] 244080d5014792deb50a5ce29f7afd189eb496d21775355de089ba9337e9fed4