[INFO] cloning repository https://github.com/zegabgab/linked-list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zegabgab/linked-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzegabgab%2Flinked-list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzegabgab%2Flinked-list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7298efb00f4577f693385991024050bef52b750d
[INFO] testing zegabgab/linked-list against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzegabgab%2Flinked-list" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zegabgab/linked-list
[INFO] finished tweaking git repo https://github.com/zegabgab/linked-list
[INFO] tweaked toml for git repo https://github.com/zegabgab/linked-list written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zegabgab/linked-list on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zegabgab/linked-list 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd3eba94ecdb1bc555450baa32210aec95d549b0aafc0398332a95649654bd7f
[INFO] running `Command { std: "docker" "start" "-a" "cd3eba94ecdb1bc555450baa32210aec95d549b0aafc0398332a95649654bd7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd3eba94ecdb1bc555450baa32210aec95d549b0aafc0398332a95649654bd7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd3eba94ecdb1bc555450baa32210aec95d549b0aafc0398332a95649654bd7f", kill_on_drop: false }`
[INFO] [stdout] cd3eba94ecdb1bc555450baa32210aec95d549b0aafc0398332a95649654bd7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c5b9256b287ee99a0d9ae2b54fef650940a90c056dc3bb2a61c9c77881d2183
[INFO] running `Command { std: "docker" "start" "-a" "6c5b9256b287ee99a0d9ae2b54fef650940a90c056dc3bb2a61c9c77881d2183", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/singly_linked_list.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
[INFO] [stdout]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "6c5b9256b287ee99a0d9ae2b54fef650940a90c056dc3bb2a61c9c77881d2183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5b9256b287ee99a0d9ae2b54fef650940a90c056dc3bb2a61c9c77881d2183", kill_on_drop: false }`
[INFO] [stdout] 6c5b9256b287ee99a0d9ae2b54fef650940a90c056dc3bb2a61c9c77881d2183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d330889d441f301090ea663b1d76504262453d8ce3a467c9ffa95d4ae746a28
[INFO] running `Command { std: "docker" "start" "-a" "3d330889d441f301090ea663b1d76504262453d8ce3a467c9ffa95d4ae746a28", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/singly_linked_list.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
[INFO] [stdout]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/singly_linked_list.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
[INFO] [stdout]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "3d330889d441f301090ea663b1d76504262453d8ce3a467c9ffa95d4ae746a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d330889d441f301090ea663b1d76504262453d8ce3a467c9ffa95d4ae746a28", kill_on_drop: false }`
[INFO] [stdout] 3d330889d441f301090ea663b1d76504262453d8ce3a467c9ffa95d4ae746a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 80045254d7165ecb66ea8398e963c05dabcfba74553265b88e8731cf0f490ef0
[INFO] running `Command { std: "docker" "start" "-a" "80045254d7165ecb66ea8398e963c05dabcfba74553265b88e8731cf0f490ef0", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/singly_linked_list.rs:30:45
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
[INFO] [stderr]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `linked_list` (lib) generated 1 warning (run `cargo fix --lib -p linked_list` to apply 1 suggestion)
[INFO] [stderr] warning: `linked_list` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/linked_list-d5bcaa208df8d096)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test singly_linked_list::tests::out_of_bounds ... ok
[INFO] [stdout] test singly_linked_list::tests::sixty_nine ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linked_list
[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" "80045254d7165ecb66ea8398e963c05dabcfba74553265b88e8731cf0f490ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80045254d7165ecb66ea8398e963c05dabcfba74553265b88e8731cf0f490ef0", kill_on_drop: false }`
[INFO] [stdout] 80045254d7165ecb66ea8398e963c05dabcfba74553265b88e8731cf0f490ef0