[INFO] cloning repository https://github.com/Sheyne/hand-and-foot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sheyne/hand-and-foot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSheyne%2Fhand-and-foot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSheyne%2Fhand-and-foot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa822a740e0a4e58b77c0fa68dacc3557e54fb1f
[INFO] testing Sheyne/hand-and-foot against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSheyne%2Fhand-and-foot" "/workspace/builds/worker-105/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sheyne/hand-and-foot on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sheyne/hand-and-foot
[INFO] finished tweaking git repo https://github.com/Sheyne/hand-and-foot
[INFO] tweaked toml for git repo https://github.com/Sheyne/hand-and-foot written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate git repo https://github.com/Sheyne/hand-and-foot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum v0.23.0
[INFO] [stderr]   Downloaded strum_macros v0.23.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c48d4b930ac1cf93d9c71ac976eccb6c293a2fe4ea5a7e5004c76207d594d91
[INFO] running `Command { std: "docker" "start" "-a" "9c48d4b930ac1cf93d9c71ac976eccb6c293a2fe4ea5a7e5004c76207d594d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c48d4b930ac1cf93d9c71ac976eccb6c293a2fe4ea5a7e5004c76207d594d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c48d4b930ac1cf93d9c71ac976eccb6c293a2fe4ea5a7e5004c76207d594d91", kill_on_drop: false }`
[INFO] [stdout] 9c48d4b930ac1cf93d9c71ac976eccb6c293a2fe4ea5a7e5004c76207d594d91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 832fd8c8ccce1d3f8334d4b11d0390bc57ee56adbcfe567e9d9539758d081b59
[INFO] running `Command { std: "docker" "start" "-a" "832fd8c8ccce1d3f8334d4b11d0390bc57ee56adbcfe567e9d9539758d081b59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling strum v0.23.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling strum_macros v0.23.0
[INFO] [stderr]    Compiling hand-and-foot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Itertools`
[INFO] [stdout]  --> src/main.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::{iproduct, Itertools};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:646:25
[INFO] [stdout]     |
[INFO] [stdout] 646 |                         dbg!(err);
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.16s
[INFO] running `Command { std: "docker" "inspect" "832fd8c8ccce1d3f8334d4b11d0390bc57ee56adbcfe567e9d9539758d081b59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "832fd8c8ccce1d3f8334d4b11d0390bc57ee56adbcfe567e9d9539758d081b59", kill_on_drop: false }`
[INFO] [stdout] 832fd8c8ccce1d3f8334d4b11d0390bc57ee56adbcfe567e9d9539758d081b59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 457fa4a4c8a2dafb7d8233517c7707868f9f0c18bcfd32fa67d7027df55fa3d8
[INFO] running `Command { std: "docker" "start" "-a" "457fa4a4c8a2dafb7d8233517c7707868f9f0c18bcfd32fa67d7027df55fa3d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling hand-and-foot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Itertools`
[INFO] [stdout]  --> src/main.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::{iproduct, Itertools};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:646:25
[INFO] [stdout]     |
[INFO] [stdout] 646 |                         dbg!(err);
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "457fa4a4c8a2dafb7d8233517c7707868f9f0c18bcfd32fa67d7027df55fa3d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "457fa4a4c8a2dafb7d8233517c7707868f9f0c18bcfd32fa67d7027df55fa3d8", kill_on_drop: false }`
[INFO] [stdout] 457fa4a4c8a2dafb7d8233517c7707868f9f0c18bcfd32fa67d7027df55fa3d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d876ec85d70699f14d594a53b1cf3d0f0e5e10939e3f13311477983494f8ecd4
[INFO] running `Command { std: "docker" "start" "-a" "d876ec85d70699f14d594a53b1cf3d0f0e5e10939e3f13311477983494f8ecd4", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Itertools`
[INFO] [stderr]  --> src/main.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | use itertools::{iproduct, Itertools};
[INFO] [stderr]   |                           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:646:25
[INFO] [stderr]     |
[INFO] [stderr] 646 |                         dbg!(err);
[INFO] [stderr]     |                         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `hand-and-foot` (bin "hand-and-foot" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hand_and_foot-cb280a9c581daf0e)
[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" "d876ec85d70699f14d594a53b1cf3d0f0e5e10939e3f13311477983494f8ecd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d876ec85d70699f14d594a53b1cf3d0f0e5e10939e3f13311477983494f8ecd4", kill_on_drop: false }`
[INFO] [stdout] d876ec85d70699f14d594a53b1cf3d0f0e5e10939e3f13311477983494f8ecd4