[INFO] cloning repository https://github.com/Dyr-El/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dyr-El/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDyr-El%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDyr-El%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad12bde0e41499a6b6aa5ec3b0f1097e3a221a8a
[INFO] checking Dyr-El/rlox against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDyr-El%2Frlox" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Dyr-El/rlox
[INFO] finished tweaking git repo https://github.com/Dyr-El/rlox
[INFO] tweaked toml for git repo https://github.com/Dyr-El/rlox written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Dyr-El/rlox on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Dyr-El/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91b2e2a4753a73647b980b247dd6ed4fc354a81a9940eb4f6e421117fc1724c7
[INFO] running `Command { std: "docker" "start" "-a" "91b2e2a4753a73647b980b247dd6ed4fc354a81a9940eb4f6e421117fc1724c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91b2e2a4753a73647b980b247dd6ed4fc354a81a9940eb4f6e421117fc1724c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b2e2a4753a73647b980b247dd6ed4fc354a81a9940eb4f6e421117fc1724c7", kill_on_drop: false }`
[INFO] [stdout] 91b2e2a4753a73647b980b247dd6ed4fc354a81a9940eb4f6e421117fc1724c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 983d8e871ddad8adcb682462918eac645a24af3d8bc71be7bbf3762b7cafb86b
[INFO] running `Command { std: "docker" "start" "-a" "983d8e871ddad8adcb682462918eac645a24af3d8bc71be7bbf3762b7cafb86b", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Precedence, Infallible>
[INFO] [stdout]    --> src/compiler.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |         Precedence::try_from(value).expect("Internal error, invalid precedence")
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Precedence, Infallible>
[INFO] [stdout]    --> src/compiler.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |         Precedence::try_from(value).expect("Internal error, invalid precedence")
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "983d8e871ddad8adcb682462918eac645a24af3d8bc71be7bbf3762b7cafb86b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "983d8e871ddad8adcb682462918eac645a24af3d8bc71be7bbf3762b7cafb86b", kill_on_drop: false }`
[INFO] [stdout] 983d8e871ddad8adcb682462918eac645a24af3d8bc71be7bbf3762b7cafb86b