[INFO] cloning repository https://github.com/pandanoir/arb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pandanoir/arb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpandanoir%2Farb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpandanoir%2Farb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b1d2d40b25747240bdfa849aa7244574c2e1886
[INFO] checking pandanoir/arb 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%2Fpandanoir%2Farb" "/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/pandanoir/arb
[INFO] finished tweaking git repo https://github.com/pandanoir/arb
[INFO] tweaked toml for git repo https://github.com/pandanoir/arb written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pandanoir/arb 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/pandanoir/arb 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] [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-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] 34f01134d6ded49ec407e71e31853e08c56595b5f8f97fa5441d2e6d49454bbb
[INFO] running `Command { std: "docker" "start" "-a" "34f01134d6ded49ec407e71e31853e08c56595b5f8f97fa5441d2e6d49454bbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34f01134d6ded49ec407e71e31853e08c56595b5f8f97fa5441d2e6d49454bbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34f01134d6ded49ec407e71e31853e08c56595b5f8f97fa5441d2e6d49454bbb", kill_on_drop: false }`
[INFO] [stdout] 34f01134d6ded49ec407e71e31853e08c56595b5f8f97fa5441d2e6d49454bbb
[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] fbf3ba8c16610f355cb02fe1422eefccd321977540652d02a5fc8d8c26381c36
[INFO] running `Command { std: "docker" "start" "-a" "fbf3ba8c16610f355cb02fe1422eefccd321977540652d02a5fc8d8c26381c36", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking arb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(help = "you can use
[INFO] [stdout] 11 | |   - integer
[INFO] [stdout] 12 | |   - nat
[INFO] [stdout] 13 | |   - float
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   - %lf (alias of double)")]
[INFO] [stdout] 20 | |     command: 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 `arb` (bin "arb") 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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(help = "you can use
[INFO] [stdout] 11 | |   - integer
[INFO] [stdout] 12 | |   - nat
[INFO] [stdout] 13 | |   - float
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   - %lf (alias of double)")]
[INFO] [stdout] 20 | |     command: 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 `arb` (bin "arb" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fbf3ba8c16610f355cb02fe1422eefccd321977540652d02a5fc8d8c26381c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf3ba8c16610f355cb02fe1422eefccd321977540652d02a5fc8d8c26381c36", kill_on_drop: false }`
[INFO] [stdout] fbf3ba8c16610f355cb02fe1422eefccd321977540652d02a5fc8d8c26381c36