[INFO] cloning repository https://github.com/Razakhel/rs-ds
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Razakhel/rs-ds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fad62cad817e09dbf5244be8a21479d641ec05a
[INFO] testing Razakhel/rs-ds against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds" "/workspace/builds/worker-95/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-95/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Razakhel/rs-ds on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Razakhel/rs-ds
[INFO] finished tweaking git repo https://github.com/Razakhel/rs-ds
[INFO] tweaked toml for git repo https://github.com/Razakhel/rs-ds written to /workspace/builds/worker-95/source/Cargo.toml
[INFO] crate git repo https://github.com/Razakhel/rs-ds already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50d23ba1729711b0c2aa3893389fae6582ad786ef42f1e41f27133a0673ab9d0
[INFO] running `Command { std: "docker" "start" "-a" "50d23ba1729711b0c2aa3893389fae6582ad786ef42f1e41f27133a0673ab9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50d23ba1729711b0c2aa3893389fae6582ad786ef42f1e41f27133a0673ab9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50d23ba1729711b0c2aa3893389fae6582ad786ef42f1e41f27133a0673ab9d0", kill_on_drop: false }`
[INFO] [stdout] 50d23ba1729711b0c2aa3893389fae6582ad786ef42f1e41f27133a0673ab9d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a50e1a08b29843c219abbc609a9deb44fe6dbf5436d942a8f14b9bc6a90586b6
[INFO] running `Command { std: "docker" "start" "-a" "a50e1a08b29843c219abbc609a9deb44fe6dbf5436d942a8f14b9bc6a90586b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs-ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/linked_list.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |   pub fn peek(&self) -> Option<&T> {
[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: `peek_mut`
[INFO] [stdout]   --> src/linked_list.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_iter`
[INFO] [stdout]   --> src/linked_list.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |   pub fn into_iter(self) -> IntoIter<T> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "a50e1a08b29843c219abbc609a9deb44fe6dbf5436d942a8f14b9bc6a90586b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a50e1a08b29843c219abbc609a9deb44fe6dbf5436d942a8f14b9bc6a90586b6", kill_on_drop: false }`
[INFO] [stdout] a50e1a08b29843c219abbc609a9deb44fe6dbf5436d942a8f14b9bc6a90586b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5ebde5485442d863e84628a53b3bcdff3e133a75abe670ffd97a16d1c30190a
[INFO] running `Command { std: "docker" "start" "-a" "d5ebde5485442d863e84628a53b3bcdff3e133a75abe670ffd97a16d1c30190a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs-ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "d5ebde5485442d863e84628a53b3bcdff3e133a75abe670ffd97a16d1c30190a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ebde5485442d863e84628a53b3bcdff3e133a75abe670ffd97a16d1c30190a", kill_on_drop: false }`
[INFO] [stdout] d5ebde5485442d863e84628a53b3bcdff3e133a75abe670ffd97a16d1c30190a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 72bddc5b2cc06151a454cb42ef5898bf7c4f35f651c663ac2953615b8adb8bbd
[INFO] running `Command { std: "docker" "start" "-a" "72bddc5b2cc06151a454cb42ef5898bf7c4f35f651c663ac2953615b8adb8bbd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rs_ds-bea6521ee1a2343c)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test linked_list::test::into_iter ... ok
[INFO] [stdout] test linked_list::test::push_pop ... ok
[INFO] [stdout] test linked_list::test::peek ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "72bddc5b2cc06151a454cb42ef5898bf7c4f35f651c663ac2953615b8adb8bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72bddc5b2cc06151a454cb42ef5898bf7c4f35f651c663ac2953615b8adb8bbd", kill_on_drop: false }`
[INFO] [stdout] 72bddc5b2cc06151a454cb42ef5898bf7c4f35f651c663ac2953615b8adb8bbd