[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#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyRoXx%2Flearning-rust" "/workspace/builds/worker-112/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-112/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TyRoXx/learning-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-112/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7087064a6cd751d50fe9861a2127c37124e0fa400af716b7a0ea7e492826161b
[INFO] running `Command { std: "docker" "start" "-a" "7087064a6cd751d50fe9861a2127c37124e0fa400af716b7a0ea7e492826161b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7087064a6cd751d50fe9861a2127c37124e0fa400af716b7a0ea7e492826161b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7087064a6cd751d50fe9861a2127c37124e0fa400af716b7a0ea7e492826161b", kill_on_drop: false }`
[INFO] [stdout] 7087064a6cd751d50fe9861a2127c37124e0fa400af716b7a0ea7e492826161b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c012e6e38184046e270354ecd7a6f96eb456e153b28a95be990489af44171d0
[INFO] running `Command { std: "docker" "start" "-a" "8c012e6e38184046e270354ecd7a6f96eb456e153b28a95be990489af44171d0", 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.70s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8c012e6e38184046e270354ecd7a6f96eb456e153b28a95be990489af44171d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c012e6e38184046e270354ecd7a6f96eb456e153b28a95be990489af44171d0", kill_on_drop: false }`
[INFO] [stdout] 8c012e6e38184046e270354ecd7a6f96eb456e153b28a95be990489af44171d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b77c068d75f236cf3b581ddf40d2a8d63dda7b0783716b99eb84ff27f33f576
[INFO] running `Command { std: "docker" "start" "-a" "6b77c068d75f236cf3b581ddf40d2a8d63dda7b0783716b99eb84ff27f33f576", kill_on_drop: false }`
[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 0.60s
[INFO] running `Command { std: "docker" "inspect" "6b77c068d75f236cf3b581ddf40d2a8d63dda7b0783716b99eb84ff27f33f576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b77c068d75f236cf3b581ddf40d2a8d63dda7b0783716b99eb84ff27f33f576", kill_on_drop: false }`
[INFO] [stdout] 6b77c068d75f236cf3b581ddf40d2a8d63dda7b0783716b99eb84ff27f33f576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cb75c7d03b0803594f2e8583d3f23b04e558f6693be731e2305d6b9d167ed8b
[INFO] running `Command { std: "docker" "start" "-a" "8cb75c7d03b0803594f2e8583d3f23b04e558f6693be731e2305d6b9d167ed8b", kill_on_drop: false }`
[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: `library2` (lib) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning_rust-8d7ab2b93b2b78e4)
[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" "8cb75c7d03b0803594f2e8583d3f23b04e558f6693be731e2305d6b9d167ed8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb75c7d03b0803594f2e8583d3f23b04e558f6693be731e2305d6b9d167ed8b", kill_on_drop: false }`
[INFO] [stdout] 8cb75c7d03b0803594f2e8583d3f23b04e558f6693be731e2305d6b9d167ed8b