[INFO] fetching crate gomez 0.5.1...
[INFO] checking gomez-0.5.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate gomez 0.5.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate gomez 0.5.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gomez 0.5.1
[INFO] tweaked toml for crates.io crate gomez 0.5.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gomez 0.5.1 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 gomez 0.5.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] aab54493e5b5e17802850e4ecb329fe21e0d19d9bdfead97c932a623ae3a7df2
[INFO] running `Command { std: "docker" "start" "-a" "aab54493e5b5e17802850e4ecb329fe21e0d19d9bdfead97c932a623ae3a7df2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aab54493e5b5e17802850e4ecb329fe21e0d19d9bdfead97c932a623ae3a7df2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aab54493e5b5e17802850e4ecb329fe21e0d19d9bdfead97c932a623ae3a7df2", kill_on_drop: false }`
[INFO] [stdout] aab54493e5b5e17802850e4ecb329fe21e0d19d9bdfead97c932a623ae3a7df2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 14d005768a49187ea8249a508cabe7a9ba42e2f4450f181b81cb0182528f5b4c
[INFO] running `Command { std: "docker" "start" "-a" "14d005768a49187ea8249a508cabe7a9ba42e2f4450f181b81cb0182528f5b4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]     Checking safe_arch v0.7.4
[INFO] [stderr]     Checking fastrand-contrib v0.1.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]     Checking wide v0.7.33
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking simba v0.8.1
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling nalgebra-macros v0.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling getset v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking nalgebra v0.32.6
[INFO] [stderr]     Checking gomez v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<<F as Problem>::Field, Infallible>
[INFO] [stdout]   --> examples/custom_algorithm.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     {
[INFO] [stdout] 32 | |         // Randomly sample in the domain.
[INFO] [stdout] 33 | |         dom.sample(x, &mut self.rng);
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |         Ok(f.apply(x))
[INFO] [stdout] 37 | |     }
[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<<F as Problem>::Field, Infallible>
[INFO] [stdout]   --> examples/custom_algorithm.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         Ok(f.apply(x))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(&[f64], f64), Infallible>
[INFO] [stdout]   --> examples/custom_algorithm.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | /     optimizer
[INFO] [stdout] 70 | |         .find(|state| {
[INFO] [stdout] 71 | |             println!("f(x) = {}\tx = {:?}", state.fx(), state.x());
[INFO] [stdout] 72 | |             state.iter() >= 100
[INFO] [stdout] 73 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gomez` (example "custom_algorithm") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "14d005768a49187ea8249a508cabe7a9ba42e2f4450f181b81cb0182528f5b4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14d005768a49187ea8249a508cabe7a9ba42e2f4450f181b81cb0182528f5b4c", kill_on_drop: false }`
[INFO] [stdout] 14d005768a49187ea8249a508cabe7a9ba42e2f4450f181b81cb0182528f5b4c
