[INFO] cloning repository https://github.com/alesharik/kr580compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alesharik/kr580compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falesharik%2Fkr580compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falesharik%2Fkr580compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1db8b0318987955b1e7e6bc1cc7cc2730ae10b59
[INFO] checking alesharik/kr580compiler 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%2Falesharik%2Fkr580compiler" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/alesharik/kr580compiler
[INFO] finished tweaking git repo https://github.com/alesharik/kr580compiler
[INFO] tweaked toml for git repo https://github.com/alesharik/kr580compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/alesharik/kr580compiler 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/alesharik/kr580compiler 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d9811af12403bff3c536a0bebb3e6e2dbc831ac6d768acc8f782aea60f1ea6a6
[INFO] running `Command { std: "docker" "start" "-a" "d9811af12403bff3c536a0bebb3e6e2dbc831ac6d768acc8f782aea60f1ea6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9811af12403bff3c536a0bebb3e6e2dbc831ac6d768acc8f782aea60f1ea6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9811af12403bff3c536a0bebb3e6e2dbc831ac6d768acc8f782aea60f1ea6a6", kill_on_drop: false }`
[INFO] [stdout] d9811af12403bff3c536a0bebb3e6e2dbc831ac6d768acc8f782aea60f1ea6a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 329657e70df770547968b7de312cd741f087221b8b9f175dde7f5d82a80aefbc
[INFO] running `Command { std: "docker" "start" "-a" "329657e70df770547968b7de312cd741f087221b8b9f175dde7f5d82a80aefbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking lalrpop-util v0.19.6
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling string_cache v0.8.2
[INFO] [stderr]    Compiling lalrpop v0.19.6
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]    Compiling kr580compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     input: String,
[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 `kr580compiler` (bin "kr580compiler") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `kr580compiler` (bin "kr580compiler" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "329657e70df770547968b7de312cd741f087221b8b9f175dde7f5d82a80aefbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329657e70df770547968b7de312cd741f087221b8b9f175dde7f5d82a80aefbc", kill_on_drop: false }`
[INFO] [stdout] 329657e70df770547968b7de312cd741f087221b8b9f175dde7f5d82a80aefbc