[INFO] fetching crate smart-path 0.4.1...
[INFO] checking smart-path-0.4.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate smart-path 0.4.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate smart-path 0.4.1
[INFO] finished tweaking crates.io crate smart-path 0.4.1
[INFO] tweaked toml for crates.io crate smart-path 0.4.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate smart-path 0.4.1 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] 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 62 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1139858ff37d77ab6250e79d2ddb27b0f92fc79d3a56ce00c9b4cd7a5a369ad8
[INFO] running `Command { std: "docker" "start" "-a" "1139858ff37d77ab6250e79d2ddb27b0f92fc79d3a56ce00c9b4cd7a5a369ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1139858ff37d77ab6250e79d2ddb27b0f92fc79d3a56ce00c9b4cd7a5a369ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1139858ff37d77ab6250e79d2ddb27b0f92fc79d3a56ce00c9b4cd7a5a369ad8", kill_on_drop: false }`
[INFO] [stdout] 1139858ff37d77ab6250e79d2ddb27b0f92fc79d3a56ce00c9b4cd7a5a369ad8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1a7a6c7545a85c9c293ae7748042ead826758aff05492eddafc124cafaeacf7a
[INFO] running `Command { std: "docker" "start" "-a" "1a7a6c7545a85c9c293ae7748042ead826758aff05492eddafc124cafaeacf7a", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking smart-path v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stdout] error: this type will no longer be must used: Result<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:348:53
[INFO] [stdout]     |
[INFO] [stdout] 348 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 349 | |         Ok(SmartPathBuf::from(s))
[INFO] [stdout] 350 | |     }
[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<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:349:9
[INFO] [stdout]     |
[INFO] [stdout] 349 |         Ok(SmartPathBuf::from(s))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:563:17
[INFO] [stdout]     |
[INFO] [stdout] 563 |                   SmartPathBuf::from_str(&p).unwrap_or_default()
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 569 | / index_mut_smartpath_impl!(
[INFO] [stdout] 570 | |     RangeFull,
[INFO] [stdout] 571 | |     #[doc="Returns a new `SmartPath` from the range provided"]
[INFO] [stdout] 572 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `index_mut_smartpath_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:563:17
[INFO] [stdout]     |
[INFO] [stdout] 563 |                   SmartPathBuf::from_str(&p).unwrap_or_default()
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 574 | / index_mut_smartpath_impl!(
[INFO] [stdout] 575 | |     RangeTo<usize>,
[INFO] [stdout] 576 | |     #[doc="Returns a new `SmartPath` from the range provided"]
[INFO] [stdout] 577 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `index_mut_smartpath_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:601:9
[INFO] [stdout]     |
[INFO] [stdout] 601 |         SmartPathBuf::from_str(&p).unwrap_or_default()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SmartPathBuf, Infallible>
[INFO] [stdout]    --> src/s_path_buf.rs:626:9
[INFO] [stdout]     |
[INFO] [stdout] 626 |         SmartPathBuf::from_str(&p).unwrap_or_default()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smart-path` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1a7a6c7545a85c9c293ae7748042ead826758aff05492eddafc124cafaeacf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a7a6c7545a85c9c293ae7748042ead826758aff05492eddafc124cafaeacf7a", kill_on_drop: false }`
[INFO] [stdout] 1a7a6c7545a85c9c293ae7748042ead826758aff05492eddafc124cafaeacf7a
