[INFO] cloning repository https://github.com/masuke5/opt-for-lang2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/masuke5/opt-for-lang2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasuke5%2Fopt-for-lang2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasuke5%2Fopt-for-lang2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e952a7ac35b5ef580526d0971273cd283ee207e0
[INFO] testing masuke5/opt-for-lang2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasuke5%2Fopt-for-lang2" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masuke5/opt-for-lang2 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/masuke5/opt-for-lang2
[INFO] finished tweaking git repo https://github.com/masuke5/opt-for-lang2
[INFO] tweaked toml for git repo https://github.com/masuke5/opt-for-lang2 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/masuke5/opt-for-lang2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] b089bfa95f847cb0725fb1657d30e214169916a1c4eac6ecb280c9b51fce44ac
[INFO] running `Command { std: "docker" "start" "-a" "b089bfa95f847cb0725fb1657d30e214169916a1c4eac6ecb280c9b51fce44ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b089bfa95f847cb0725fb1657d30e214169916a1c4eac6ecb280c9b51fce44ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b089bfa95f847cb0725fb1657d30e214169916a1c4eac6ecb280c9b51fce44ac", kill_on_drop: false }`
[INFO] [stdout] b089bfa95f847cb0725fb1657d30e214169916a1c4eac6ecb280c9b51fce44ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 516bc64e2ab0c38369504dc3bc942239d0f8fb4a084aae4dfeafbc17e0407847
[INFO] running `Command { std: "docker" "start" "-a" "516bc64e2ab0c38369504dc3bc942239d0f8fb4a084aae4dfeafbc17e0407847", kill_on_drop: false }`
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling opt-for-lang2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]    --> src/graph.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             value: &'a T,
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pred`
[INFO] [stdout]    --> src/graph.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |             pred: Vec<usize>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `succ`
[INFO] [stdout]    --> src/graph.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             succ: Vec<usize>,
[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 0.96s
[INFO] running `Command { std: "docker" "inspect" "516bc64e2ab0c38369504dc3bc942239d0f8fb4a084aae4dfeafbc17e0407847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516bc64e2ab0c38369504dc3bc942239d0f8fb4a084aae4dfeafbc17e0407847", kill_on_drop: false }`
[INFO] [stdout] 516bc64e2ab0c38369504dc3bc942239d0f8fb4a084aae4dfeafbc17e0407847
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 67073c4d8b36251cbed69a8fd243779c0c6a2179219ead5e8c57e19c08c00cfc
[INFO] running `Command { std: "docker" "start" "-a" "67073c4d8b36251cbed69a8fd243779c0c6a2179219ead5e8c57e19c08c00cfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling opt-for-lang2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]    --> src/graph.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             value: &'a T,
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pred`
[INFO] [stdout]    --> src/graph.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |             pred: Vec<usize>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `succ`
[INFO] [stdout]    --> src/graph.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             succ: Vec<usize>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]    --> src/graph.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             value: &'a T,
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pred`
[INFO] [stdout]    --> src/graph.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |             pred: Vec<usize>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `succ`
[INFO] [stdout]    --> src/graph.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             succ: Vec<usize>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "67073c4d8b36251cbed69a8fd243779c0c6a2179219ead5e8c57e19c08c00cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67073c4d8b36251cbed69a8fd243779c0c6a2179219ead5e8c57e19c08c00cfc", kill_on_drop: false }`
[INFO] [stdout] 67073c4d8b36251cbed69a8fd243779c0c6a2179219ead5e8c57e19c08c00cfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] fc00ea9448b44b9ccae01d4df07927ce64f697951df58be866ccc2e99d83f467
[INFO] running `Command { std: "docker" "start" "-a" "fc00ea9448b44b9ccae01d4df07927ce64f697951df58be866ccc2e99d83f467", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]    --> src/graph.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |             value: &'a T,
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pred`
[INFO] [stderr]    --> src/graph.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |             pred: Vec<usize>,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `succ`
[INFO] [stderr]    --> src/graph.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |             succ: Vec<usize>,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `opt-for-lang2` (lib) generated 3 warnings
[INFO] [stderr] warning: `opt-for-lang2` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/opt_for_lang2-40bb8219e14b148e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test graph::test::test_add ... ok
[INFO] [stdout] test graph::test::test_succ ... ok
[INFO] [stdout] test graph::test::test_pred ... 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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/opt_for_lang2-e6d47a76569b7b35)
[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] [stderr]    Doc-tests opt-for-lang2
[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" "fc00ea9448b44b9ccae01d4df07927ce64f697951df58be866ccc2e99d83f467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc00ea9448b44b9ccae01d4df07927ce64f697951df58be866ccc2e99d83f467", kill_on_drop: false }`
[INFO] [stdout] fc00ea9448b44b9ccae01d4df07927ce64f697951df58be866ccc2e99d83f467