[INFO] cloning repository https://github.com/briandco/Prompt3_code_base
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/briandco/Prompt3_code_base" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbriandco%2FPrompt3_code_base", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbriandco%2FPrompt3_code_base'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71c9b7689c57f0588fdf05d38e13a2deba6e0875
[INFO] checking briandco/Prompt3_code_base 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%2Fbriandco%2FPrompt3_code_base" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/briandco/Prompt3_code_base
[INFO] finished tweaking git repo https://github.com/briandco/Prompt3_code_base
[INFO] tweaked toml for git repo https://github.com/briandco/Prompt3_code_base written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/briandco/Prompt3_code_base 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/briandco/Prompt3_code_base 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8fee47e6db9d7c5583060464a904df75493709eac327c635698c975117250772
[INFO] running `Command { std: "docker" "start" "-a" "8fee47e6db9d7c5583060464a904df75493709eac327c635698c975117250772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fee47e6db9d7c5583060464a904df75493709eac327c635698c975117250772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fee47e6db9d7c5583060464a904df75493709eac327c635698c975117250772", kill_on_drop: false }`
[INFO] [stdout] 8fee47e6db9d7c5583060464a904df75493709eac327c635698c975117250772
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f8b54225ec70eddbc0a587779f5cd95245bb3154fd5c25f358c234a5dc3ee612
[INFO] running `Command { std: "docker" "start" "-a" "f8b54225ec70eddbc0a587779f5cd95245bb3154fd5c25f358c234a5dc3ee612", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking backslash v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]     Checking thiserror v2.0.16
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking choose v1.3.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/opt.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Specify field separator other than whitespace, using Rust `regex` syntax
[INFO] [stdout] 25 | |     #[structopt(short, long)]
[INFO] [stdout] 26 | |     pub field_separator: Option<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 `choose` (bin "choose") 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: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/opt.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Specify field separator other than whitespace, using Rust `regex` syntax
[INFO] [stdout] 25 | |     #[structopt(short, long)]
[INFO] [stdout] 26 | |     pub field_separator: Option<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 `choose` (bin "choose" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f8b54225ec70eddbc0a587779f5cd95245bb3154fd5c25f358c234a5dc3ee612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8b54225ec70eddbc0a587779f5cd95245bb3154fd5c25f358c234a5dc3ee612", kill_on_drop: false }`
[INFO] [stdout] f8b54225ec70eddbc0a587779f5cd95245bb3154fd5c25f358c234a5dc3ee612
