[INFO] fetching crate cres 0.9.1...
[INFO] checking cres-0.9.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cres 0.9.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate cres 0.9.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate cres 0.9.1
[INFO] tweaked toml for crates.io crate cres 0.9.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cres 0.9.1 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 cres 0.9.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d9531420ab3b5cb24b9ee812f8d706c18133d860f8713c3fbd3bff5e3b623883
[INFO] running `Command { std: "docker" "start" "-a" "d9531420ab3b5cb24b9ee812f8d706c18133d860f8713c3fbd3bff5e3b623883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9531420ab3b5cb24b9ee812f8d706c18133d860f8713c3fbd3bff5e3b623883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9531420ab3b5cb24b9ee812f8d706c18133d860f8713c3fbd3bff5e3b623883", kill_on_drop: false }`
[INFO] [stdout] d9531420ab3b5cb24b9ee812f8d706c18133d860f8713c3fbd3bff5e3b623883
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d1fee21762b9e82421befbb2495ffbda7dc10a98f54852c44b233c991bb6cae2
[INFO] running `Command { std: "docker" "start" "-a" "d1fee21762b9e82421befbb2495ffbda7dc10a98f54852c44b233c991bb6cae2", kill_on_drop: false }`
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[INFO] [stderr]     Checking noisy_float v0.2.0
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[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling icu_normalizer v1.5.0
[INFO] [stderr]    Compiling idna_adapter v1.2.0
[INFO] [stderr]    Compiling idna v1.0.3
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[INFO] [stderr]    Compiling git2 v0.20.0
[INFO] [stderr]    Compiling toml v0.8.20
[INFO] [stderr]    Compiling cres v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:105:73
[INFO] [stdout]     |
[INFO] [stdout] 105 |       fn cluster(&self, mut orig_ev: Event) -> Result<Event, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________________________^
[INFO] [stdout] 106 | |         let id = orig_ev.id;
[INFO] [stdout] 107 | |         let weights = std::mem::take(&mut orig_ev.weights);
[INFO] [stdout] 108 | |         let mut outgoing = orig_ev.outgoing().to_owned();
[INFO] [stdout] ...   |
[INFO] [stdout] 162 | |         Ok(ev)
[INFO] [stdout] 163 | |     }
[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<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         Ok(ev)
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:176:64
[INFO] [stdout]     |
[INFO] [stdout] 176 |       fn cluster(&self, ev: Event) -> Result<Event, Self::Error> {
[INFO] [stdout]     |  ________________________________________________________________^
[INFO] [stdout] 177 | |         Ok(ev)
[INFO] [stdout] 178 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Ok(ev)
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:76:42
[INFO] [stdout]     |
[INFO] [stdout]  76 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout]  77 | |         {
[INFO] [stdout]  78 | |             self.print_wt_sum(&events);
[INFO] [stdout] ...   |
[INFO] [stdout] 112 | |         Ok(events)
[INFO] [stdout] 113 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         Ok(events)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:246:42
[INFO] [stdout]     |
[INFO] [stdout] 246 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout] 247 | |         let observer_data = ObserverData {
[INFO] [stdout] 248 | |             cell_collector: self
[INFO] [stdout] 249 | |                 .cell_collector
[INFO] [stdout] ...   |
[INFO] [stdout] 271 | |         Ok(events)
[INFO] [stdout] 272 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |         let events = crate::traits::Resample::resample(&mut resampler, events)?;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         Ok(events)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 38 | |         let min_wt = self.min_wt;
[INFO] [stdout] 39 | |         if min_wt == 0. || events.is_empty() {
[INFO] [stdout] 40 | |             return Ok(events);
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |         Ok(events)
[INFO] [stdout] 72 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |             return Ok(events);
[INFO] [stdout]    |                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Ok(events)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:83:42
[INFO] [stdout]    |
[INFO] [stdout] 83 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 84 | |         Ok(events)
[INFO] [stdout] 85 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         Ok(events)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:105:73
[INFO] [stdout]     |
[INFO] [stdout] 105 |       fn cluster(&self, mut orig_ev: Event) -> Result<Event, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________________________^
[INFO] [stdout] 106 | |         let id = orig_ev.id;
[INFO] [stdout] 107 | |         let weights = std::mem::take(&mut orig_ev.weights);
[INFO] [stdout] 108 | |         let mut outgoing = orig_ev.outgoing().to_owned();
[INFO] [stdout] ...   |
[INFO] [stdout] 162 | |         Ok(ev)
[INFO] [stdout] 163 | |     }
[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<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         Ok(ev)
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:176:64
[INFO] [stdout]     |
[INFO] [stdout] 176 |       fn cluster(&self, ev: Event) -> Result<Event, Self::Error> {
[INFO] [stdout]     |  ________________________________________________________________^
[INFO] [stdout] 177 | |         Ok(ev)
[INFO] [stdout] 178 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Event, Infallible>
[INFO] [stdout]    --> src/cluster.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Ok(ev)
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:76:42
[INFO] [stdout]     |
[INFO] [stdout]  76 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout]  77 | |         {
[INFO] [stdout]  78 | |             self.print_wt_sum(&events);
[INFO] [stdout] ...   |
[INFO] [stdout] 112 | |         Ok(events)
[INFO] [stdout] 113 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         Ok(events)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:246:42
[INFO] [stdout]     |
[INFO] [stdout] 246 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout] 247 | |         let observer_data = ObserverData {
[INFO] [stdout] 248 | |             cell_collector: self
[INFO] [stdout] 249 | |                 .cell_collector
[INFO] [stdout] ...   |
[INFO] [stdout] 271 | |         Ok(events)
[INFO] [stdout] 272 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |         let events = crate::traits::Resample::resample(&mut resampler, events)?;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, ResamplingError>
[INFO] [stdout]    --> src/resampler.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         Ok(events)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 38 | |         let min_wt = self.min_wt;
[INFO] [stdout] 39 | |         if min_wt == 0. || events.is_empty() {
[INFO] [stdout] 40 | |             return Ok(events);
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |         Ok(events)
[INFO] [stdout] 72 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |             return Ok(events);
[INFO] [stdout]    |                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Ok(events)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:83:42
[INFO] [stdout]    |
[INFO] [stdout] 83 |       ) -> Result<Vec<Event>, Self::Error> {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 84 | |         Ok(events)
[INFO] [stdout] 85 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Event>, Infallible>
[INFO] [stdout]   --> src/unweight.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         Ok(events)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cres` (lib test) due to 14 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cres` (lib) due to 14 previous errors
[INFO] running `Command { std: "docker" "inspect" "d1fee21762b9e82421befbb2495ffbda7dc10a98f54852c44b233c991bb6cae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1fee21762b9e82421befbb2495ffbda7dc10a98f54852c44b233c991bb6cae2", kill_on_drop: false }`
[INFO] [stdout] d1fee21762b9e82421befbb2495ffbda7dc10a98f54852c44b233c991bb6cae2
