[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 master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasuke5%2Fopt-for-lang2" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masuke5/opt-for-lang2 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-66/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" "+62efba8a050c64249dab942951bb28f710208bc8" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d68959ffea563c5c6497b5d1b2111474cc99867ef366444239ec7513f0f5684
[INFO] running `Command { std: "docker" "start" "-a" "8d68959ffea563c5c6497b5d1b2111474cc99867ef366444239ec7513f0f5684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d68959ffea563c5c6497b5d1b2111474cc99867ef366444239ec7513f0f5684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d68959ffea563c5c6497b5d1b2111474cc99867ef366444239ec7513f0f5684", kill_on_drop: false }`
[INFO] [stdout] 8d68959ffea563c5c6497b5d1b2111474cc99867ef366444239ec7513f0f5684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba653d1ee6e7c205f77b8cbb9b72576f151284d0208833486b6d618016a16171
[INFO] running `Command { std: "docker" "start" "-a" "ba653d1ee6e7c205f77b8cbb9b72576f151284d0208833486b6d618016a16171", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 12.53s
[INFO] running `Command { std: "docker" "inspect" "ba653d1ee6e7c205f77b8cbb9b72576f151284d0208833486b6d618016a16171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba653d1ee6e7c205f77b8cbb9b72576f151284d0208833486b6d618016a16171", kill_on_drop: false }`
[INFO] [stdout] ba653d1ee6e7c205f77b8cbb9b72576f151284d0208833486b6d618016a16171
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5564d781d8749794c22ce419394459a5fc3557b2e3d00db3ad099f509276c0e2
[INFO] running `Command { std: "docker" "start" "-a" "5564d781d8749794c22ce419394459a5fc3557b2e3d00db3ad099f509276c0e2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 8.47s
[INFO] running `Command { std: "docker" "inspect" "5564d781d8749794c22ce419394459a5fc3557b2e3d00db3ad099f509276c0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5564d781d8749794c22ce419394459a5fc3557b2e3d00db3ad099f509276c0e2", kill_on_drop: false }`
[INFO] [stdout] 5564d781d8749794c22ce419394459a5fc3557b2e3d00db3ad099f509276c0e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3987d13609b9c2728fccff821fba0b2630184e3b7d42aebfc9fc14c14accf85e
[INFO] running `Command { std: "docker" "start" "-a" "3987d13609b9c2728fccff821fba0b2630184e3b7d42aebfc9fc14c14accf85e", 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 0.02s
[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_pred ... ok
[INFO] [stdout] test graph::test::test_succ ... 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" "3987d13609b9c2728fccff821fba0b2630184e3b7d42aebfc9fc14c14accf85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3987d13609b9c2728fccff821fba0b2630184e3b7d42aebfc9fc14c14accf85e", kill_on_drop: false }`
[INFO] [stdout] 3987d13609b9c2728fccff821fba0b2630184e3b7d42aebfc9fc14c14accf85e