[INFO] cloning repository https://github.com/vs-123/basic-linked-list-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vs-123/basic-linked-list-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvs-123%2Fbasic-linked-list-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvs-123%2Fbasic-linked-list-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a41948d9f53353784d714fe405b371000269641c
[INFO] testing vs-123/basic-linked-list-rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvs-123%2Fbasic-linked-list-rs" "/workspace/builds/worker-97/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-97/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vs-123/basic-linked-list-rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vs-123/basic-linked-list-rs
[INFO] finished tweaking git repo https://github.com/vs-123/basic-linked-list-rs
[INFO] tweaked toml for git repo https://github.com/vs-123/basic-linked-list-rs written to /workspace/builds/worker-97/source/Cargo.toml
[INFO] crate git repo https://github.com/vs-123/basic-linked-list-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6a97bf5cc0b9073e8c936beb45797ed1f48c45aa378dbea61ebb5c5dad985b5
[INFO] running `Command { std: "docker" "start" "-a" "b6a97bf5cc0b9073e8c936beb45797ed1f48c45aa378dbea61ebb5c5dad985b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6a97bf5cc0b9073e8c936beb45797ed1f48c45aa378dbea61ebb5c5dad985b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6a97bf5cc0b9073e8c936beb45797ed1f48c45aa378dbea61ebb5c5dad985b5", kill_on_drop: false }`
[INFO] [stdout] b6a97bf5cc0b9073e8c936beb45797ed1f48c45aa378dbea61ebb5c5dad985b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd52d86d79101d221b0f5928a35bfe38a4830063c97d7c2b433d91031bf3314b
[INFO] running `Command { std: "docker" "start" "-a" "fd52d86d79101d221b0f5928a35bfe38a4830063c97d7c2b433d91031bf3314b", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked-list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn add(&mut self, item: 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: `remove_item`
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn remove_item(&mut self, item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]   --> src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn contains(&self, item: T) -> bool {
[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 1.02s
[INFO] running `Command { std: "docker" "inspect" "fd52d86d79101d221b0f5928a35bfe38a4830063c97d7c2b433d91031bf3314b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd52d86d79101d221b0f5928a35bfe38a4830063c97d7c2b433d91031bf3314b", kill_on_drop: false }`
[INFO] [stdout] fd52d86d79101d221b0f5928a35bfe38a4830063c97d7c2b433d91031bf3314b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42b350bd0d4206086dd7030ba89a54d23967dd39158194100c74ba53036e1106
[INFO] running `Command { std: "docker" "start" "-a" "42b350bd0d4206086dd7030ba89a54d23967dd39158194100c74ba53036e1106", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linked-list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_list-3618ea628e05295e)
[INFO] running `Command { std: "docker" "inspect" "42b350bd0d4206086dd7030ba89a54d23967dd39158194100c74ba53036e1106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42b350bd0d4206086dd7030ba89a54d23967dd39158194100c74ba53036e1106", kill_on_drop: false }`
[INFO] [stdout] 42b350bd0d4206086dd7030ba89a54d23967dd39158194100c74ba53036e1106
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40ec4238e483003efb0f483af69c7e5d2fa07ae1efa3962ed7583fbe542a190c
[INFO] running `Command { std: "docker" "start" "-a" "40ec4238e483003efb0f483af69c7e5d2fa07ae1efa3962ed7583fbe542a190c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_list-3618ea628e05295e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "40ec4238e483003efb0f483af69c7e5d2fa07ae1efa3962ed7583fbe542a190c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ec4238e483003efb0f483af69c7e5d2fa07ae1efa3962ed7583fbe542a190c", kill_on_drop: false }`
[INFO] [stdout] 40ec4238e483003efb0f483af69c7e5d2fa07ae1efa3962ed7583fbe542a190c