[INFO] cloning repository https://github.com/wojciechmurimi/list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wojciechmurimi/list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwojciechmurimi%2Flist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwojciechmurimi%2Flist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e1e3919cd653335f6104d6e64055fbeb17f80dc
[INFO] testing wojciechmurimi/list against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwojciechmurimi%2Flist" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wojciechmurimi/list on toolchain 1ddedbaa5919b7b3e70d984660e21e844c615c97
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wojciechmurimi/list
[INFO] finished tweaking git repo https://github.com/wojciechmurimi/list
[INFO] tweaked toml for git repo https://github.com/wojciechmurimi/list written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wojciechmurimi/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" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c4bafa39e07305e704bb99a65e26eee965342c58b2a4dc51bc737ab1ae237bb
[INFO] running `Command { std: "docker" "start" "-a" "0c4bafa39e07305e704bb99a65e26eee965342c58b2a4dc51bc737ab1ae237bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c4bafa39e07305e704bb99a65e26eee965342c58b2a4dc51bc737ab1ae237bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c4bafa39e07305e704bb99a65e26eee965342c58b2a4dc51bc737ab1ae237bb", kill_on_drop: false }`
[INFO] [stdout] 0c4bafa39e07305e704bb99a65e26eee965342c58b2a4dc51bc737ab1ae237bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c74173847f8da581c5d2afc41c89ef7b4d7f66bfc7216be8bb32cef4e7746818
[INFO] running `Command { std: "docker" "start" "-a" "c74173847f8da581c5d2afc41c89ef7b4d7f66bfc7216be8bb32cef4e7746818", kill_on_drop: false }`
[INFO] [stderr]    Compiling fplay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs::File`
[INFO] [stdout]  --> src/linkedlist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linkedlist::LinkedList`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linkedlist::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/linkedlist.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `init_iter_markers` is never used
[INFO] [stdout]    --> src/linkedlist.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 59  | impl<T: Default> LinkedList<T> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn init_iter_markers(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "c74173847f8da581c5d2afc41c89ef7b4d7f66bfc7216be8bb32cef4e7746818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c74173847f8da581c5d2afc41c89ef7b4d7f66bfc7216be8bb32cef4e7746818", kill_on_drop: false }`
[INFO] [stdout] c74173847f8da581c5d2afc41c89ef7b4d7f66bfc7216be8bb32cef4e7746818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6a5688a921b7fb7ce8cccd3b88bda7016674ea0502bb5c40b6ea97a2d8bf3c6
[INFO] running `Command { std: "docker" "start" "-a" "a6a5688a921b7fb7ce8cccd3b88bda7016674ea0502bb5c40b6ea97a2d8bf3c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling fplay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs::File`
[INFO] [stdout]  --> src/linkedlist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linkedlist::LinkedList`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linkedlist::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/linkedlist.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `init_iter_markers` is never used
[INFO] [stdout]    --> src/linkedlist.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 59  | impl<T: Default> LinkedList<T> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn init_iter_markers(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linkedlist.rs:448:9
[INFO] [stdout]     |
[INFO] [stdout] 448 |         list.backward();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 448 |         let _ = list.backward();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linkedlist.rs:452:9
[INFO] [stdout]     |
[INFO] [stdout] 452 |         list.forward();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let _ = list.forward();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "a6a5688a921b7fb7ce8cccd3b88bda7016674ea0502bb5c40b6ea97a2d8bf3c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a5688a921b7fb7ce8cccd3b88bda7016674ea0502bb5c40b6ea97a2d8bf3c6", kill_on_drop: false }`
[INFO] [stdout] a6a5688a921b7fb7ce8cccd3b88bda7016674ea0502bb5c40b6ea97a2d8bf3c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14f80a00153329fdb68fc6a4e1090856d57a799aa833c81fd3643ad7e51bb49e
[INFO] running `Command { std: "docker" "start" "-a" "14f80a00153329fdb68fc6a4e1090856d57a799aa833c81fd3643ad7e51bb49e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `fs::File`
[INFO] [stderr]  --> src/linkedlist.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     fs::File,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `linkedlist::LinkedList`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use linkedlist::LinkedList;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `io::Read`
[INFO] [stderr]  --> src/linkedlist.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     io::Read,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `init_iter_markers` is never used
[INFO] [stderr]    --> src/linkedlist.rs:215:8
[INFO] [stderr]     |
[INFO] [stderr] 59  | impl<T: Default> LinkedList<T> {
[INFO] [stderr]     | ------------------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 215 |     fn init_iter_markers(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/linkedlist.rs:448:9
[INFO] [stderr]     |
[INFO] [stderr] 448 |         list.backward();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 448 |         let _ = list.backward();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/linkedlist.rs:452:9
[INFO] [stderr]     |
[INFO] [stderr] 452 |         list.forward();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 452 |         let _ = list.forward();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `fplay` (bin "fplay" test) generated 6 warnings (run `cargo fix --bin "fplay" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fplay-9948a0221ab9b623)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test linkedlist::tests::append ... ok
[INFO] [stdout] test linkedlist::tests::headeqcurr ... ok
[INFO] [stdout] test linkedlist::tests::edit ... ok
[INFO] [stdout] test linkedlist::tests::iterate_backward ... ok
[INFO] [stdout] test linkedlist::tests::iterate_forward ... ok
[INFO] [stdout] test linkedlist::tests::iteration ... ok
[INFO] [stdout] test linkedlist::tests::prepend ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "14f80a00153329fdb68fc6a4e1090856d57a799aa833c81fd3643ad7e51bb49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f80a00153329fdb68fc6a4e1090856d57a799aa833c81fd3643ad7e51bb49e", kill_on_drop: false }`
[INFO] [stdout] 14f80a00153329fdb68fc6a4e1090856d57a799aa833c81fd3643ad7e51bb49e
[INFO] testing wojciechmurimi/list against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwojciechmurimi%2Flist" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wojciechmurimi/list on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wojciechmurimi/list
[INFO] finished tweaking git repo https://github.com/wojciechmurimi/list
[INFO] tweaked toml for git repo https://github.com/wojciechmurimi/list written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wojciechmurimi/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" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abbfe3679ace532118906529db95bf2b35c3c8e0a08ca4e50fa3580aaf4123a7
[INFO] running `Command { std: "docker" "start" "-a" "abbfe3679ace532118906529db95bf2b35c3c8e0a08ca4e50fa3580aaf4123a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abbfe3679ace532118906529db95bf2b35c3c8e0a08ca4e50fa3580aaf4123a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abbfe3679ace532118906529db95bf2b35c3c8e0a08ca4e50fa3580aaf4123a7", kill_on_drop: false }`
[INFO] [stdout] abbfe3679ace532118906529db95bf2b35c3c8e0a08ca4e50fa3580aaf4123a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5831b04449117c71d5903c7e8b4f6a293d606f708a53a9ec43f78bc4e15534a
[INFO] running `Command { std: "docker" "start" "-a" "a5831b04449117c71d5903c7e8b4f6a293d606f708a53a9ec43f78bc4e15534a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fplay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs::File`
[INFO] [stdout]  --> src/linkedlist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linkedlist::LinkedList`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linkedlist::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/linkedlist.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `init_iter_markers` is never used
[INFO] [stdout]    --> src/linkedlist.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 59  | impl<T: Default> LinkedList<T> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn init_iter_markers(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "a5831b04449117c71d5903c7e8b4f6a293d606f708a53a9ec43f78bc4e15534a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5831b04449117c71d5903c7e8b4f6a293d606f708a53a9ec43f78bc4e15534a", kill_on_drop: false }`
[INFO] [stdout] a5831b04449117c71d5903c7e8b4f6a293d606f708a53a9ec43f78bc4e15534a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3d480d1e6cd16e1d633dd6589bea7809a1e9ff69e88f234ab0f3190d02657e4
[INFO] running `Command { std: "docker" "start" "-a" "f3d480d1e6cd16e1d633dd6589bea7809a1e9ff69e88f234ab0f3190d02657e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling fplay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs::File`
[INFO] [stdout]  --> src/linkedlist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linkedlist::LinkedList`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linkedlist::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/linkedlist.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `init_iter_markers` is never used
[INFO] [stdout]    --> src/linkedlist.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 59  | impl<T: Default> LinkedList<T> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn init_iter_markers(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linkedlist.rs:448:9
[INFO] [stdout]     |
[INFO] [stdout] 448 |         list.backward();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 448 |         let _ = list.backward();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linkedlist.rs:452:9
[INFO] [stdout]     |
[INFO] [stdout] 452 |         list.forward();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let _ = list.forward();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcUMUzVq/symbols.o" "/opt/rustwide/target/debug/deps/fplay-9948a0221ab9b623.fplay.77a1809d281d8377-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/fplay-9948a0221ab9b623.0ojdr9xiq9n3hdsd46xbkhwxk.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-d2aabef62695c36a.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-85ffb1adee1b6de7.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-47c1d1c97d43fb9c.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-767d58143f86b11a.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9506e3738f23e7c7.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0e87bdc388165b9b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-28d2ee21ffecbcd0.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-4cd64c3d9fc2560b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a1fedeceba4cc892.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-0b8915cbc76cd410.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-fec2ce82fc5b17fa.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fdb02324b55b2840.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-db981ef273c68b12.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-2c4968ed4cb29e9c.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-661cdd70a5b83118.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbb3bfdc8e63ca5.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a4c5ad4392a26401.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-9409cd7d030362b9.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-7b90a2705bcf265b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-80d2f129fb536a6f.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-f72b956e24d1de70.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-632ae0f28c5e55ff.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-7586cb84705120bb.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/self-contained" "-o" "/opt/rustwide/target/debug/deps/fplay-9948a0221ab9b623" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 7 [Bus error], core dumped
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fplay` (bin "fplay" test) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f3d480d1e6cd16e1d633dd6589bea7809a1e9ff69e88f234ab0f3190d02657e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3d480d1e6cd16e1d633dd6589bea7809a1e9ff69e88f234ab0f3190d02657e4", kill_on_drop: false }`
[INFO] [stdout] f3d480d1e6cd16e1d633dd6589bea7809a1e9ff69e88f234ab0f3190d02657e4