[INFO] cloning repository https://github.com/open-spaced-repetition/fsrs-rs-python
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/open-spaced-repetition/fsrs-rs-python" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-rs-python", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-rs-python'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e6e300693ed274c46e220f0fab0d72c48a392dc
[INFO] checking open-spaced-repetition/fsrs-rs-python against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-rs-python" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/open-spaced-repetition/fsrs-rs-python
[INFO] finished tweaking git repo https://github.com/open-spaced-repetition/fsrs-rs-python
[INFO] tweaked toml for git repo https://github.com/open-spaced-repetition/fsrs-rs-python written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/open-spaced-repetition/fsrs-rs-python 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 git repo https://github.com/open-spaced-repetition/fsrs-rs-python 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 91c2ba4cd984ffffa4f6cc39fc5dc576fc91bf30cc7211812d0d9924c58b27fd
[INFO] running `Command { std: "docker" "start" "-a" "91c2ba4cd984ffffa4f6cc39fc5dc576fc91bf30cc7211812d0d9924c58b27fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91c2ba4cd984ffffa4f6cc39fc5dc576fc91bf30cc7211812d0d9924c58b27fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91c2ba4cd984ffffa4f6cc39fc5dc576fc91bf30cc7211812d0d9924c58b27fd", kill_on_drop: false }`
[INFO] [stdout] 91c2ba4cd984ffffa4f6cc39fc5dc576fc91bf30cc7211812d0d9924c58b27fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 09bef9f686c8e1f7d300e4a9e70688b7501cf1e007257635003ebe1d37bbf6dd
[INFO] running `Command { std: "docker" "start" "-a" "09bef9f686c8e1f7d300e4a9e70688b7501cf1e007257635003ebe1d37bbf6dd", kill_on_drop: false }`
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[INFO] [stderr]     Checking fsrs v5.2.0
[INFO] [stderr]     Checking fsrs-rs-python v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<NextStates, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |     ) -> NextStates {
[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<Vec<f32>, Infallible>
[INFO] [stdout]   --> src/lib.rs:36:67
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_parameters(&self, train_set: Vec<FSRSItem>) -> Vec<f32> {
[INFO] [stdout]    |                                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<f32>, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:58
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn benchmark(&self, train_set: Vec<FSRSItem>) -> Vec<f32> {
[INFO] [stdout]    |                                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MemoryState, Infallible>
[INFO] [stdout]   --> src/lib.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     ) -> MemoryState {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MemoryState, Infallible>
[INFO] [stdout]   --> src/lib.rs:71:88
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn memory_state(&self, item: FSRSItem, starting_state: Option<MemoryState>) -> MemoryState {
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:170:43
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn long_term_review_cnt(&self) -> usize {
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SimulationResult, Infallible>
[INFO] [stdout]    --> src/lib.rs:230:6
[INFO] [stdout]     |
[INFO] [stdout] 230 | ) -> SimulationResult {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<simulator_config::SimulatorConfig, Infallible>
[INFO] [stdout]    --> src/lib.rs:237:34
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn default_simulator_config() -> SimulatorConfig {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsrs-rs-python` (lib test) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<NextStates, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |     ) -> NextStates {
[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<Vec<f32>, Infallible>
[INFO] [stdout]   --> src/lib.rs:36:67
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_parameters(&self, train_set: Vec<FSRSItem>) -> Vec<f32> {
[INFO] [stdout]    |                                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<f32>, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:58
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn benchmark(&self, train_set: Vec<FSRSItem>) -> Vec<f32> {
[INFO] [stdout]    |                                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MemoryState, Infallible>
[INFO] [stdout]   --> src/lib.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     ) -> MemoryState {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MemoryState, Infallible>
[INFO] [stdout]   --> src/lib.rs:71:88
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn memory_state(&self, item: FSRSItem, starting_state: Option<MemoryState>) -> MemoryState {
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:170:43
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn long_term_review_cnt(&self) -> usize {
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SimulationResult, Infallible>
[INFO] [stdout]    --> src/lib.rs:230:6
[INFO] [stdout]     |
[INFO] [stdout] 230 | ) -> SimulationResult {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<simulator_config::SimulatorConfig, Infallible>
[INFO] [stdout]    --> src/lib.rs:237:34
[INFO] [stdout]     |
[INFO] [stdout] 237 | fn default_simulator_config() -> SimulatorConfig {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsrs-rs-python` (lib) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "09bef9f686c8e1f7d300e4a9e70688b7501cf1e007257635003ebe1d37bbf6dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09bef9f686c8e1f7d300e4a9e70688b7501cf1e007257635003ebe1d37bbf6dd", kill_on_drop: false }`
[INFO] [stdout] 09bef9f686c8e1f7d300e4a9e70688b7501cf1e007257635003ebe1d37bbf6dd
