[INFO] cloning repository https://github.com/mannerism/rustIntro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mannerism/rustIntro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmannerism%2FrustIntro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmannerism%2FrustIntro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89aad92614ef1cca1b79e42253947128c6d681c5
[INFO] testing mannerism/rustIntro against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmannerism%2FrustIntro" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mannerism/rustIntro 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/mannerism/rustIntro
[INFO] finished tweaking git repo https://github.com/mannerism/rustIntro
[INFO] tweaked toml for git repo https://github.com/mannerism/rustIntro written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/mannerism/rustIntro 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] b20608729bcf6dcc388edf05f77480504db3dbc85753deb914a53b1f52f516f6
[INFO] running `Command { std: "docker" "start" "-a" "b20608729bcf6dcc388edf05f77480504db3dbc85753deb914a53b1f52f516f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b20608729bcf6dcc388edf05f77480504db3dbc85753deb914a53b1f52f516f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b20608729bcf6dcc388edf05f77480504db3dbc85753deb914a53b1f52f516f6", kill_on_drop: false }`
[INFO] [stdout] b20608729bcf6dcc388edf05f77480504db3dbc85753deb914a53b1f52f516f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 54563f76a3dbccf088f8ae547c6e081425e220b09278a4ca817f177084bf551a
[INFO] running `Command { std: "docker" "start" "-a" "54563f76a3dbccf088f8ae547c6e081425e220b09278a4ca817f177084bf551a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> src/struct_ownership.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   a: i32,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> src/struct_ownership.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   b: f64,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "54563f76a3dbccf088f8ae547c6e081425e220b09278a4ca817f177084bf551a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54563f76a3dbccf088f8ae547c6e081425e220b09278a4ca817f177084bf551a", kill_on_drop: false }`
[INFO] [stdout] 54563f76a3dbccf088f8ae547c6e081425e220b09278a4ca817f177084bf551a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 48170ead6f326b437e8b34d6de82e88c7ce993e5c5d5dbe64ad97b92dd438bc5
[INFO] running `Command { std: "docker" "start" "-a" "48170ead6f326b437e8b34d6de82e88c7ce993e5c5d5dbe64ad97b92dd438bc5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> src/struct_ownership.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   a: i32,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> src/struct_ownership.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   b: f64,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 29.78s
[INFO] running `Command { std: "docker" "inspect" "48170ead6f326b437e8b34d6de82e88c7ce993e5c5d5dbe64ad97b92dd438bc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48170ead6f326b437e8b34d6de82e88c7ce993e5c5d5dbe64ad97b92dd438bc5", kill_on_drop: false }`
[INFO] [stdout] 48170ead6f326b437e8b34d6de82e88c7ce993e5c5d5dbe64ad97b92dd438bc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 546b5b1b4dc3ff46360e35f7834771e8eadd41daf671f82a2237f3296d6f474b
[INFO] running `Command { std: "docker" "start" "-a" "546b5b1b4dc3ff46360e35f7834771e8eadd41daf671f82a2237f3296d6f474b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `a`
[INFO] [stderr]  --> src/struct_ownership.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   a: i32,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `b`
[INFO] [stderr]  --> src/struct_ownership.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   b: f64,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_sandbox` (bin "rust_sandbox" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_sandbox-a08f64e007be2b05)
[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" "546b5b1b4dc3ff46360e35f7834771e8eadd41daf671f82a2237f3296d6f474b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "546b5b1b4dc3ff46360e35f7834771e8eadd41daf671f82a2237f3296d6f474b", kill_on_drop: false }`
[INFO] [stdout] 546b5b1b4dc3ff46360e35f7834771e8eadd41daf671f82a2237f3296d6f474b