[INFO] fetching crate rgb2spec 0.1.1...
[INFO] testing rgb2spec-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate rgb2spec 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rgb2spec 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rgb2spec 0.1.1
[INFO] tweaked toml for crates.io crate rgb2spec 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rgb2spec 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rgb2spec 0.1.1 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97ef295f3314c5805b97c05e853929f3f524777cd0f6d8b6f7963d69a9c06302
[INFO] running `Command { std: "docker" "start" "-a" "97ef295f3314c5805b97c05e853929f3f524777cd0f6d8b6f7963d69a9c06302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97ef295f3314c5805b97c05e853929f3f524777cd0f6d8b6f7963d69a9c06302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ef295f3314c5805b97c05e853929f3f524777cd0f6d8b6f7963d69a9c06302", kill_on_drop: false }`
[INFO] [stdout] 97ef295f3314c5805b97c05e853929f3f524777cd0f6d8b6f7963d69a9c06302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 767b2431ad7ce1710f2435a3a67c4bb50f72a2c4cfd975cd2ca5566ef7683404
[INFO] running `Command { std: "docker" "start" "-a" "767b2431ad7ce1710f2435a3a67c4bb50f72a2c4cfd975cd2ca5566ef7683404", kill_on_drop: false }`
[INFO] [stderr]    Compiling rgb2spec v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "767b2431ad7ce1710f2435a3a67c4bb50f72a2c4cfd975cd2ca5566ef7683404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767b2431ad7ce1710f2435a3a67c4bb50f72a2c4cfd975cd2ca5566ef7683404", kill_on_drop: false }`
[INFO] [stdout] 767b2431ad7ce1710f2435a3a67c4bb50f72a2c4cfd975cd2ca5566ef7683404
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d12751c80986dca2ee3dcc3c0cdbf2f2761364d0dd27c3285a8c6663a0c0b966
[INFO] running `Command { std: "docker" "start" "-a" "d12751c80986dca2ee3dcc3c0cdbf2f2761364d0dd27c3285a8c6663a0c0b966", kill_on_drop: false }`
[INFO] [stderr]    Compiling rgb2spec v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "d12751c80986dca2ee3dcc3c0cdbf2f2761364d0dd27c3285a8c6663a0c0b966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d12751c80986dca2ee3dcc3c0cdbf2f2761364d0dd27c3285a8c6663a0c0b966", kill_on_drop: false }`
[INFO] [stdout] d12751c80986dca2ee3dcc3c0cdbf2f2761364d0dd27c3285a8c6663a0c0b966
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a8b626c55954fc3bd0924ff5a47e8e53973d11df1dab86976850b23ec89cb0cc
[INFO] running `Command { std: "docker" "start" "-a" "a8b626c55954fc3bd0924ff5a47e8e53973d11df1dab86976850b23ec89cb0cc", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/rgb2spec.rs (/opt/rustwide/target/debug/deps/rgb2spec-94168660ae45aaee)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/optimize-cli.rs (/opt/rustwide/target/debug/deps/optimize-ffdbc07c24d85e76)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rgb2spec
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/rgb2spec.rs - (line 12) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/rgb2spec.rs - (line 12) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/rgb2spec.rs:17:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_rgb2spec_rs_12_0() {
[INFO] [stdout]   |                                      --------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 8 | let rgb2spec = RGB2Spec::load("examples/out.spec")?;
[INFO] [stdout]   |                                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_rgb2spec_rs_12_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use rgb2spec::{self, RGB2Spec};
[INFO] [stdout] ...
[INFO] [stdout] 12| let reflectance = rgb2spec::eval_precise(coefficients, wavelength);
[INFO] [stdout] 13+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/rgb2spec.rs - (line 12)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "a8b626c55954fc3bd0924ff5a47e8e53973d11df1dab86976850b23ec89cb0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8b626c55954fc3bd0924ff5a47e8e53973d11df1dab86976850b23ec89cb0cc", kill_on_drop: false }`
[INFO] [stdout] a8b626c55954fc3bd0924ff5a47e8e53973d11df1dab86976850b23ec89cb0cc