[INFO] fetching crate cache_bust_macro 0.2.0...
[INFO] checking cache_bust_macro-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cache_bust_macro 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate cache_bust_macro 0.2.0
[INFO] finished tweaking crates.io crate cache_bust_macro 0.2.0
[INFO] tweaked toml for crates.io crate cache_bust_macro 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cache_bust_macro 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding litrs v0.4.2 (available: v1.0.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[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] a392474845f286c80793a80f1b929eb5e4966dd3a9712e4da3794a37b243b5e1
[INFO] running `Command { std: "docker" "start" "-a" "a392474845f286c80793a80f1b929eb5e4966dd3a9712e4da3794a37b243b5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a392474845f286c80793a80f1b929eb5e4966dd3a9712e4da3794a37b243b5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a392474845f286c80793a80f1b929eb5e4966dd3a9712e4da3794a37b243b5e1", kill_on_drop: false }`
[INFO] [stdout] a392474845f286c80793a80f1b929eb5e4966dd3a9712e4da3794a37b243b5e1
[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] c3d5c4ecc79897f1af1d415f5c47e328ad962c5c36ed22d5544cb75493a4f069
[INFO] running `Command { std: "docker" "start" "-a" "c3d5c4ecc79897f1af1d415f5c47e328ad962c5c36ed22d5544cb75493a4f069", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking litrs v0.4.2
[INFO] [stderr]     Checking cache_bust_core v0.2.0
[INFO] [stderr]     Checking cache_bust_macro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/lib.rs:65:23
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut local_path = PathBuf::from_str(local_path).expect("Expected a valid path");
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/lib.rs:65:23
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut local_path = PathBuf::from_str(local_path).expect("Expected a valid path");
[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 `cache_bust_macro` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cache_bust_macro` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c3d5c4ecc79897f1af1d415f5c47e328ad962c5c36ed22d5544cb75493a4f069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d5c4ecc79897f1af1d415f5c47e328ad962c5c36ed22d5544cb75493a4f069", kill_on_drop: false }`
[INFO] [stdout] c3d5c4ecc79897f1af1d415f5c47e328ad962c5c36ed22d5544cb75493a4f069