[INFO] fetching crate mudtjn-rusty-journal 0.1.1...
[INFO] checking mudtjn-rusty-journal-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mudtjn-rusty-journal 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate mudtjn-rusty-journal 0.1.1
[INFO] finished tweaking crates.io crate mudtjn-rusty-journal 0.1.1
[INFO] tweaked toml for crates.io crate mudtjn-rusty-journal 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mudtjn-rusty-journal 0.1.1 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 crates.io crate mudtjn-rusty-journal 0.1.1 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a38fa897978adabff0a7843614d2ece73168cf12bbd9a6e204aed7d01fc32f3c
[INFO] running `Command { std: "docker" "start" "-a" "a38fa897978adabff0a7843614d2ece73168cf12bbd9a6e204aed7d01fc32f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a38fa897978adabff0a7843614d2ece73168cf12bbd9a6e204aed7d01fc32f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38fa897978adabff0a7843614d2ece73168cf12bbd9a6e204aed7d01fc32f3c", kill_on_drop: false }`
[INFO] [stdout] a38fa897978adabff0a7843614d2ece73168cf12bbd9a6e204aed7d01fc32f3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 62828fc531026b36469f2928f7472facbfe55b9cae73283bec5620106b3aeccb
[INFO] running `Command { std: "docker" "start" "-a" "62828fc531026b36469f2928f7472facbfe55b9cae73283bec5620106b3aeccb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling anyhow v1.0.91
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling serde_derive v1.0.213
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking mudtjn-rusty-journal v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:8:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | /         /// task desciption text
[INFO] [stdout]  9 | |         #[structopt()]
[INFO] [stdout] 10 | |         task: 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 `mudtjn-rusty-journal` (bin "mudtjn-rusty-journal") 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/cli.rs:8:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | /         /// task desciption text
[INFO] [stdout]  9 | |         #[structopt()]
[INFO] [stdout] 10 | |         task: 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 `mudtjn-rusty-journal` (bin "mudtjn-rusty-journal" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "62828fc531026b36469f2928f7472facbfe55b9cae73283bec5620106b3aeccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62828fc531026b36469f2928f7472facbfe55b9cae73283bec5620106b3aeccb", kill_on_drop: false }`
[INFO] [stdout] 62828fc531026b36469f2928f7472facbfe55b9cae73283bec5620106b3aeccb