[INFO] cloning repository https://github.com/zeroyukiy/learning-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zeroyukiy/learning-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeroyukiy%2Flearning-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeroyukiy%2Flearning-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e30a33e9781fb61f061ad3d311c8bc3dfb375df
[INFO] testing zeroyukiy/learning-rs against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeroyukiy%2Flearning-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zeroyukiy/learning-rs
[INFO] finished tweaking git repo https://github.com/zeroyukiy/learning-rs
[INFO] tweaked toml for git repo https://github.com/zeroyukiy/learning-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zeroyukiy/learning-rs on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zeroyukiy/learning-rs 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee49843b87fa6343bb58a3f0c0b88bdb0882aa9254586187af752a6909ae836a
[INFO] running `Command { std: "docker" "start" "-a" "ee49843b87fa6343bb58a3f0c0b88bdb0882aa9254586187af752a6909ae836a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee49843b87fa6343bb58a3f0c0b88bdb0882aa9254586187af752a6909ae836a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee49843b87fa6343bb58a3f0c0b88bdb0882aa9254586187af752a6909ae836a", kill_on_drop: false }`
[INFO] [stdout] ee49843b87fa6343bb58a3f0c0b88bdb0882aa9254586187af752a6909ae836a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8a5aed87571f91469fc39e9b92b77e8a6d6ceb6cf3ee17b6980d2f2dcb8eccc
[INFO] running `Command { std: "docker" "start" "-a" "e8a5aed87571f91469fc39e9b92b77e8a6d6ceb6cf3ee17b6980d2f2dcb8eccc", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling learning-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/collections.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/collections.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         format!("{}-{}", two, p);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = format!("{}-{}", two, p);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `Command { std: "docker" "inspect" "e8a5aed87571f91469fc39e9b92b77e8a6d6ceb6cf3ee17b6980d2f2dcb8eccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8a5aed87571f91469fc39e9b92b77e8a6d6ceb6cf3ee17b6980d2f2dcb8eccc", kill_on_drop: false }`
[INFO] [stdout] e8a5aed87571f91469fc39e9b92b77e8a6d6ceb6cf3ee17b6980d2f2dcb8eccc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72a3a1c4071a9ba2a222d03cbb42a9087783eb60caf77246b8570f468c369224
[INFO] running `Command { std: "docker" "start" "-a" "72a3a1c4071a9ba2a222d03cbb42a9087783eb60caf77246b8570f468c369224", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/collections.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/collections.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         format!("{}-{}", two, p);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = format!("{}-{}", two, p);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "72a3a1c4071a9ba2a222d03cbb42a9087783eb60caf77246b8570f468c369224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72a3a1c4071a9ba2a222d03cbb42a9087783eb60caf77246b8570f468c369224", kill_on_drop: false }`
[INFO] [stdout] 72a3a1c4071a9ba2a222d03cbb42a9087783eb60caf77246b8570f468c369224
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 78dd3876c485c4a2fa2b5b87261c8f1cbb25afcd77fd067cd674cb2171b9f073
[INFO] running `Command { std: "docker" "start" "-a" "78dd3876c485c4a2fa2b5b87261c8f1cbb25afcd77fd067cd674cb2171b9f073", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/collections.rs:26:10
[INFO] [stderr]    |
[INFO] [stderr] 26 |         };
[INFO] [stderr]    |          ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]   --> src/collections.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         format!("{}-{}", two, p);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let _ = format!("{}-{}", two, p);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-rs` (bin "learning-rs" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learning_rs-b1973b044e98d342)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test iterators::test_our_iterator ... ok
[INFO] [stdout] test iterators::filters_by_size ... ok
[INFO] [stdout] test tests::greeting_contains_name ... ignored
[INFO] [stdout] test tests::it_not_adds_two ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test iterators::using_other_iterator_trait_methods ... ok
[INFO] [stdout] test tests::larger_can_hold_smaller ... ok
[INFO] [stdout] test tests::it_adds_two ... ok
[INFO] [stdout] test tests::greater_than_100 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "78dd3876c485c4a2fa2b5b87261c8f1cbb25afcd77fd067cd674cb2171b9f073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78dd3876c485c4a2fa2b5b87261c8f1cbb25afcd77fd067cd674cb2171b9f073", kill_on_drop: false }`
[INFO] [stdout] 78dd3876c485c4a2fa2b5b87261c8f1cbb25afcd77fd067cd674cb2171b9f073