[INFO] cloning repository https://github.com/TyRoXx/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TyRoXx/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyRoXx%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyRoXx%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c46ec3dd48c0a92bf81a504bc372bb95d6b203b7
[INFO] testing TyRoXx/learning-rust against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyRoXx%2Flearning-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TyRoXx/learning-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/TyRoXx/learning-rust
[INFO] finished tweaking git repo https://github.com/TyRoXx/learning-rust
[INFO] tweaked toml for git repo https://github.com/TyRoXx/learning-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/TyRoXx/learning-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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d55f17bc8f827dd8bb9edca828704c1cca9cfbf54f8eb076dc56bebd657c4d76
[INFO] running `Command { std: "docker" "start" "-a" "d55f17bc8f827dd8bb9edca828704c1cca9cfbf54f8eb076dc56bebd657c4d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d55f17bc8f827dd8bb9edca828704c1cca9cfbf54f8eb076dc56bebd657c4d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d55f17bc8f827dd8bb9edca828704c1cca9cfbf54f8eb076dc56bebd657c4d76", kill_on_drop: false }`
[INFO] [stdout] d55f17bc8f827dd8bb9edca828704c1cca9cfbf54f8eb076dc56bebd657c4d76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 602e5b086faa4ae4248d7d9855dc2e6432cde4cc87c670df58c208035b548414
[INFO] running `Command { std: "docker" "start" "-a" "602e5b086faa4ae4248d7d9855dc2e6432cde4cc87c670df58c208035b548414", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling library2 v0.1.0 (/opt/rustwide/workdir/src/library2)
[INFO] [stdout] warning: unused import: `std::fs::read_dir`
[INFO] [stdout]  --> src/library2/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_dir;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/library2/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::atomic::AtomicPtr`
[INFO] [stdout]  --> src/library2/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::atomic::AtomicPtr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::atomic::Ordering`
[INFO] [stdout]  --> src/library2/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::atomic::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `library2::add`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use library2::add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 1.87s
[INFO] running `Command { std: "docker" "inspect" "602e5b086faa4ae4248d7d9855dc2e6432cde4cc87c670df58c208035b548414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "602e5b086faa4ae4248d7d9855dc2e6432cde4cc87c670df58c208035b548414", kill_on_drop: false }`
[INFO] [stdout] 602e5b086faa4ae4248d7d9855dc2e6432cde4cc87c670df58c208035b548414
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] af5001f36b5fcfd9d53b789778c164368dd8313c9c057cbc3dff59dbd354cec6
[INFO] running `Command { std: "docker" "start" "-a" "af5001f36b5fcfd9d53b789778c164368dd8313c9c057cbc3dff59dbd354cec6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused import: `std::fs::read_dir`
[INFO] [stdout]  --> src/library2/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_dir;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/library2/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::atomic::AtomicPtr`
[INFO] [stdout]  --> src/library2/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::atomic::AtomicPtr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::atomic::Ordering`
[INFO] [stdout]  --> src/library2/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::atomic::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "af5001f36b5fcfd9d53b789778c164368dd8313c9c057cbc3dff59dbd354cec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af5001f36b5fcfd9d53b789778c164368dd8313c9c057cbc3dff59dbd354cec6", kill_on_drop: false }`
[INFO] [stdout] af5001f36b5fcfd9d53b789778c164368dd8313c9c057cbc3dff59dbd354cec6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0db3d931c0c04fe356f98bce54d992c6a2420570075dfd3653ae1ffb5c965a7e
[INFO] running `Command { std: "docker" "start" "-a" "0db3d931c0c04fe356f98bce54d992c6a2420570075dfd3653ae1ffb5c965a7e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::fs::read_dir`
[INFO] [stderr]  --> src/library2/src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::read_dir;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/library2/src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::atomic::AtomicPtr`
[INFO] [stderr]  --> src/library2/src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::atomic::AtomicPtr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::atomic::Ordering`
[INFO] [stderr]  --> src/library2/src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::atomic::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning_rust-9c96a42c543f5ff5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test trivial ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0db3d931c0c04fe356f98bce54d992c6a2420570075dfd3653ae1ffb5c965a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db3d931c0c04fe356f98bce54d992c6a2420570075dfd3653ae1ffb5c965a7e", kill_on_drop: false }`
[INFO] [stdout] 0db3d931c0c04fe356f98bce54d992c6a2420570075dfd3653ae1ffb5c965a7e