[INFO] cloning repository https://github.com/catenarytransit/transit-dmfr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/catenarytransit/transit-dmfr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatenarytransit%2Ftransit-dmfr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatenarytransit%2Ftransit-dmfr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0bb7f0494c92728b8c7c38be1ab8c52b8416178b
[INFO] checking catenarytransit/transit-dmfr 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%2Fcatenarytransit%2Ftransit-dmfr" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/catenarytransit/transit-dmfr
[INFO] finished tweaking git repo https://github.com/catenarytransit/transit-dmfr
[INFO] tweaked toml for git repo https://github.com/catenarytransit/transit-dmfr written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/catenarytransit/transit-dmfr 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/catenarytransit/transit-dmfr 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] 886c71394b6823b53cf1e5a2738b96b7cde0b7b16328a325839248beac11d267
[INFO] running `Command { std: "docker" "start" "-a" "886c71394b6823b53cf1e5a2738b96b7cde0b7b16328a325839248beac11d267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "886c71394b6823b53cf1e5a2738b96b7cde0b7b16328a325839248beac11d267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "886c71394b6823b53cf1e5a2738b96b7cde0b7b16328a325839248beac11d267", kill_on_drop: false }`
[INFO] [stdout] 886c71394b6823b53cf1e5a2738b96b7cde0b7b16328a325839248beac11d267
[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] c98dedd93a08c15b89f998e273579f09be029259443765dfcf912c6298c71ea5
[INFO] running `Command { std: "docker" "start" "-a" "c98dedd93a08c15b89f998e273579f09be029259443765dfcf912c6298c71ea5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_json v1.0.135
[INFO] [stderr]     Checking regress v0.10.2
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]     Checking dmfr v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Language, Infallible>
[INFO] [stdout]     --> src/lib.rs:1369:57
[INFO] [stdout]      |
[INFO] [stdout] 1369 |       fn from_str(value: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]      |  _________________________________________________________^
[INFO] [stdout] 1370 | |         Ok(Self(value.to_string()))
[INFO] [stdout] 1371 | |     }
[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<Language, Infallible>
[INFO] [stdout]     --> src/lib.rs:1370:9
[INFO] [stdout]      |
[INFO] [stdout] 1370 |         Ok(Self(value.to_string()))
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dmfr` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Language, Infallible>
[INFO] [stdout]     --> src/lib.rs:1369:57
[INFO] [stdout]      |
[INFO] [stdout] 1369 |       fn from_str(value: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]      |  _________________________________________________________^
[INFO] [stdout] 1370 | |         Ok(Self(value.to_string()))
[INFO] [stdout] 1371 | |     }
[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<Language, Infallible>
[INFO] [stdout]     --> src/lib.rs:1370:9
[INFO] [stdout]      |
[INFO] [stdout] 1370 |         Ok(Self(value.to_string()))
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dmfr` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c98dedd93a08c15b89f998e273579f09be029259443765dfcf912c6298c71ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c98dedd93a08c15b89f998e273579f09be029259443765dfcf912c6298c71ea5", kill_on_drop: false }`
[INFO] [stdout] c98dedd93a08c15b89f998e273579f09be029259443765dfcf912c6298c71ea5