[INFO] fetching crate facet-yaml 0.29.1...
[INFO] checking facet-yaml-0.29.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate facet-yaml 0.29.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate facet-yaml 0.29.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate facet-yaml 0.29.1
[INFO] tweaked toml for crates.io crate facet-yaml 0.29.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate facet-yaml 0.29.1 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 facet-yaml 0.29.1 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-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] 92daeec275e1e2f07f58646e33992a554523cad8dd278ec529b8c74dc4ea3e54
[INFO] running `Command { std: "docker" "start" "-a" "92daeec275e1e2f07f58646e33992a554523cad8dd278ec529b8c74dc4ea3e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92daeec275e1e2f07f58646e33992a554523cad8dd278ec529b8c74dc4ea3e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92daeec275e1e2f07f58646e33992a554523cad8dd278ec529b8c74dc4ea3e54", kill_on_drop: false }`
[INFO] [stdout] 92daeec275e1e2f07f58646e33992a554523cad8dd278ec529b8c74dc4ea3e54
[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] 69a6157ac65a34b1cc7e73137f47b952adc1f24b72189f9884a5e7b9307f7ff0
[INFO] running `Command { std: "docker" "start" "-a" "69a6157ac65a34b1cc7e73137f47b952adc1f24b72189f9884a5e7b9307f7ff0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling mutants v0.0.3
[INFO] [stderr]    Compiling shadow_counted v0.4.0
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking impls v1.0.3
[INFO] [stderr]    Compiling owo-colors v4.2.2
[INFO] [stderr]     Checking arraydeque v0.5.1
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]    Compiling cargo-husky v1.5.0
[INFO] [stderr]     Checking btparse v0.2.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking color-backtrace v0.7.0
[INFO] [stderr]     Checking facet-core v0.29.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]     Checking hashlink v0.10.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling unsynn v0.1.1
[INFO] [stderr]     Checking yaml-rust2 v0.10.3
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]    Compiling facet-macros-parse v0.29.1
[INFO] [stderr]    Compiling facet-testhelpers-macros v0.29.0
[INFO] [stderr]     Checking ulid v1.2.1
[INFO] [stderr]     Checking facet-testhelpers v0.29.0
[INFO] [stderr]    Compiling facet-macros-emit v0.29.1
[INFO] [stderr]     Checking facet-reflect v0.29.1
[INFO] [stderr]     Checking facet-serialize v0.29.0
[INFO] [stderr]    Compiling facet-macros v0.29.1
[INFO] [stderr]     Checking facet-yaml v0.29.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking facet v0.29.1
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/serialize/struct_.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |             c: "quoted".parse().unwrap(),
[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 `facet-yaml` (test "mod") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "69a6157ac65a34b1cc7e73137f47b952adc1f24b72189f9884a5e7b9307f7ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69a6157ac65a34b1cc7e73137f47b952adc1f24b72189f9884a5e7b9307f7ff0", kill_on_drop: false }`
[INFO] [stdout] 69a6157ac65a34b1cc7e73137f47b952adc1f24b72189f9884a5e7b9307f7ff0