[INFO] cloning repository https://github.com/Byron/learn-rust-with-gitoxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Byron/learn-rust-with-gitoxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Flearn-rust-with-gitoxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Flearn-rust-with-gitoxide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9d8b82e6f0a541fdf0be1f85fcfc047981ee813
[INFO] testing Byron/learn-rust-with-gitoxide against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Flearn-rust-with-gitoxide" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Byron/learn-rust-with-gitoxide 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/Byron/learn-rust-with-gitoxide
[INFO] finished tweaking git repo https://github.com/Byron/learn-rust-with-gitoxide
[INFO] tweaked toml for git repo https://github.com/Byron/learn-rust-with-gitoxide written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Byron/learn-rust-with-gitoxide 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5330ba7ceb997ded90373f0f7c68c50514ce7ff8c102b91613c67faee5b268d9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5330ba7ceb997ded90373f0f7c68c50514ce7ff8c102b91613c67faee5b268d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5330ba7ceb997ded90373f0f7c68c50514ce7ff8c102b91613c67faee5b268d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5330ba7ceb997ded90373f0f7c68c50514ce7ff8c102b91613c67faee5b268d9", kill_on_drop: false }`
[INFO] [stdout] 5330ba7ceb997ded90373f0f7c68c50514ce7ff8c102b91613c67faee5b268d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] fec9e52e49c378250e96650530d9bce29e64f249576f2e5de32c5bb620e6a5a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fec9e52e49c378250e96650530d9bce29e64f249576f2e5de32c5bb620e6a5a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling conversions v0.1.0 (/opt/rustwide/workdir/conversions)
[INFO] [stderr]    Compiling strings v0.1.0 (/opt/rustwide/workdir/strings)
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir/iterators)
[INFO] [stderr]    Compiling boxing v0.1.0 (/opt/rustwide/workdir/boxing)
[INFO] [stderr]    Compiling closures v0.1.0 (/opt/rustwide/workdir/closures)
[INFO] [stderr]    Compiling ownership-and-borrowing v0.1.0 (/opt/rustwide/workdir/ownership-and-borrowing)
[INFO] [stderr]    Compiling options-and-results v0.1.0 (/opt/rustwide/workdir/options-and-results)
[INFO] [stderr]    Compiling errors v0.1.0 (/opt/rustwide/workdir/errors)
[INFO] [stdout] warning: struct is never constructed: `MyVec`
[INFO] [stdout]   --> boxing/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyVec<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> boxing/src/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn iter(&self) -> Box<dyn Iterator<Item = &String> + '_> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `FilterMap` that must be used
[INFO] [stdout]  --> iterators/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     v.into_iter()
[INFO] [stdout] 6 | |         .filter_map(|v| String::from_utf8(v.into()).ok());
[INFO] [stdout]   | |__________________________________________________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> closures/src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             count += 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "fec9e52e49c378250e96650530d9bce29e64f249576f2e5de32c5bb620e6a5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec9e52e49c378250e96650530d9bce29e64f249576f2e5de32c5bb620e6a5a0", kill_on_drop: false }`
[INFO] [stdout] fec9e52e49c378250e96650530d9bce29e64f249576f2e5de32c5bb620e6a5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2fc655b19620bac496b756da30f65d4d356cd92f2546a8a047fca2aa5f1544f7
[INFO] running `Command { std: "docker" "start" "-a" "2fc655b19620bac496b756da30f65d4d356cd92f2546a8a047fca2aa5f1544f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ownership-and-borrowing v0.1.0 (/opt/rustwide/workdir/ownership-and-borrowing)
[INFO] [stderr]    Compiling conversions v0.1.0 (/opt/rustwide/workdir/conversions)
[INFO] [stderr]    Compiling options-and-results v0.1.0 (/opt/rustwide/workdir/options-and-results)
[INFO] [stderr]    Compiling boxing v0.1.0 (/opt/rustwide/workdir/boxing)
[INFO] [stderr]    Compiling strings v0.1.0 (/opt/rustwide/workdir/strings)
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir/iterators)
[INFO] [stderr]    Compiling closures v0.1.0 (/opt/rustwide/workdir/closures)
[INFO] [stderr]    Compiling errors v0.1.0 (/opt/rustwide/workdir/errors)
[INFO] [stdout] warning: struct is never constructed: `MyVec`
[INFO] [stdout]   --> boxing/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyVec<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> boxing/src/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn iter(&self) -> Box<dyn Iterator<Item = &String> + '_> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `FilterMap` that must be used
[INFO] [stdout]  --> iterators/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     v.into_iter()
[INFO] [stdout] 6 | |         .filter_map(|v| String::from_utf8(v.into()).ok());
[INFO] [stdout]   | |__________________________________________________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> closures/src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             count += 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "2fc655b19620bac496b756da30f65d4d356cd92f2546a8a047fca2aa5f1544f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc655b19620bac496b756da30f65d4d356cd92f2546a8a047fca2aa5f1544f7", kill_on_drop: false }`
[INFO] [stdout] 2fc655b19620bac496b756da30f65d4d356cd92f2546a8a047fca2aa5f1544f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c22f7ab77b376a388973c2fa69108637235cb17824b8aed52bd9eb4b8a70614b
[INFO] running `Command { std: "docker" "start" "-a" "c22f7ab77b376a388973c2fa69108637235cb17824b8aed52bd9eb4b8a70614b", kill_on_drop: false }`
[INFO] [stderr] warning: unused `FilterMap` that must be used
[INFO] [stderr]  --> iterators/src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | /     v.into_iter()
[INFO] [stderr] 6 | |         .filter_map(|v| String::from_utf8(v.into()).ok());
[INFO] [stderr]   | |__________________________________________________________^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stderr] 
[INFO] [stderr] warning: `iterators` (bin "iterators" test) generated 1 warning
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> closures/src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             count += 1;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = help: did you mean to capture by reference instead?
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MyVec`
[INFO] [stderr]   --> boxing/src/main.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | struct MyVec<'a> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> boxing/src/main.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn iter(&self) -> Box<dyn Iterator<Item = &String> + '_> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `closures` (bin "closures" test) generated 1 warning
[INFO] [stderr] warning: `boxing` (bin "boxing" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/boxing-cb3308ae76d4a12b)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/closures-4a2a4dbac2e2ca0f)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/conversions-f362c6e26dcb3a4e)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/errors-9856dd2083c0c9d2)
[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] [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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iterators-46a5f980415a2c7b)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/options_and_results-71350245b6f35d32)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ownership_and_borrowing-68b802473de3e407)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/strings-95a087a8059cd312)
[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" "c22f7ab77b376a388973c2fa69108637235cb17824b8aed52bd9eb4b8a70614b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c22f7ab77b376a388973c2fa69108637235cb17824b8aed52bd9eb4b8a70614b", kill_on_drop: false }`
[INFO] [stdout] c22f7ab77b376a388973c2fa69108637235cb17824b8aed52bd9eb4b8a70614b