[INFO] fetching crate pigeon-core 0.2.0...
[INFO] checking pigeon-core-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pigeon-core 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate pigeon-core 0.2.0
[INFO] finished tweaking crates.io crate pigeon-core 0.2.0
[INFO] tweaked toml for crates.io crate pigeon-core 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pigeon-core 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_xoshiro v0.6.0 (available: v0.7.0)
[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-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] fbeb8264597f0f494ee24db36f985de9a40b8ea03e622321b0e4ed434e910dca
[INFO] running `Command { std: "docker" "start" "-a" "fbeb8264597f0f494ee24db36f985de9a40b8ea03e622321b0e4ed434e910dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbeb8264597f0f494ee24db36f985de9a40b8ea03e622321b0e4ed434e910dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbeb8264597f0f494ee24db36f985de9a40b8ea03e622321b0e4ed434e910dca", kill_on_drop: false }`
[INFO] [stdout] fbeb8264597f0f494ee24db36f985de9a40b8ea03e622321b0e4ed434e910dca
[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] 00f6cb39cfeb9c66abf3f6861f251144b4eaa92d30bd2cae359e088cd81f53c9
[INFO] running `Command { std: "docker" "start" "-a" "00f6cb39cfeb9c66abf3f6861f251144b4eaa92d30bd2cae359e088cd81f53c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling stacker v0.1.22
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]    Compiling casey v0.4.2
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling ouroboros_macro v0.18.5
[INFO] [stderr]     Checking ouroboros v0.18.5
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]    Compiling ar_archive_writer v0.2.0
[INFO] [stderr]    Compiling psm v0.1.28
[INFO] [stderr]     Checking pigeon-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<alloc::string::String, Infallible>
[INFO] [stdout]   --> src/string.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             <Self as core::str::FromStr>::from_str(&input[tag.span.clone()])
[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<alloc::string::String, Infallible>
[INFO] [stdout]   --> src/string.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             <Self as core::str::FromStr>::from_str(&input[tag.span.clone()])
[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 `pigeon-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `pigeon-core` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "00f6cb39cfeb9c66abf3f6861f251144b4eaa92d30bd2cae359e088cd81f53c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f6cb39cfeb9c66abf3f6861f251144b4eaa92d30bd2cae359e088cd81f53c9", kill_on_drop: false }`
[INFO] [stdout] 00f6cb39cfeb9c66abf3f6861f251144b4eaa92d30bd2cae359e088cd81f53c9
