[INFO] fetching crate keyword-tools 0.1.0...
[INFO] checking keyword-tools-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate keyword-tools 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate keyword-tools 0.1.0
[INFO] finished tweaking crates.io crate keyword-tools 0.1.0
[INFO] tweaked toml for crates.io crate keyword-tools 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate keyword-tools 0.1.0 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 265 packages to latest compatible versions
[INFO] [stderr]       Adding indicatif v0.17.11 (available: v0.18.3)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c864edffb78aadae715deebca3b9354031fc6ac22634990ebd98e24a24110cd3
[INFO] running `Command { std: "docker" "start" "-a" "c864edffb78aadae715deebca3b9354031fc6ac22634990ebd98e24a24110cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c864edffb78aadae715deebca3b9354031fc6ac22634990ebd98e24a24110cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c864edffb78aadae715deebca3b9354031fc6ac22634990ebd98e24a24110cd3", kill_on_drop: false }`
[INFO] [stdout] c864edffb78aadae715deebca3b9354031fc6ac22634990ebd98e24a24110cd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 21a716b0b9076dd5c8f5b68f386bc77c7bdf099a82c3d37386d34b1af61b5a55
[INFO] running `Command { std: "docker" "start" "-a" "21a716b0b9076dd5c8f5b68f386bc77c7bdf099a82c3d37386d34b1af61b5a55", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]    Compiling serde_core v1.0.228
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[INFO] [stderr]     Checking keyword-tools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:45:38
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_keyword_ptn(&self) -> String {
[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<&pyo3::Bound<'_, Keyword>, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn __repr__(slf: &Bound<'_, Self>) -> PyResult<String> {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:86:23
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn word(&self) -> String {
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:89:24
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn alias(&self) -> String {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn score(&self) -> isize {
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn language(&self) -> String {
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:98:27
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn category(&self) -> String {
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:104:27
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn load_keywords() -> Vec<Keyword> {
[INFO] [stdout]     |                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:109:45
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn load_keywords_from_rsc(rsc: &str) -> Vec<Keyword> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:115:80
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub fn extract_keywords(text: &str, keywords: Vec<Keyword>, lang: Language) -> Vec<Keyword> {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keyword-tools` (lib) due to 10 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<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:45:38
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_keyword_ptn(&self) -> String {
[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<&pyo3::Bound<'_, rsc::Keyword>, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn __repr__(slf: &Bound<'_, Self>) -> PyResult<String> {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:86:23
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn word(&self) -> String {
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:89:24
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn alias(&self) -> String {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn score(&self) -> isize {
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn language(&self) -> String {
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> rsc/mod.rs:98:27
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn category(&self) -> String {
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rsc::Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:104:27
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn load_keywords() -> Vec<Keyword> {
[INFO] [stdout]     |                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rsc::Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:109:45
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn load_keywords_from_rsc(rsc: &str) -> Vec<Keyword> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rsc::Keyword>, Infallible>
[INFO] [stdout]    --> rsc/mod.rs:115:80
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub fn extract_keywords(text: &str, keywords: Vec<Keyword>, lang: Language) -> Vec<Keyword> {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keyword-tools` (lib test) due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "21a716b0b9076dd5c8f5b68f386bc77c7bdf099a82c3d37386d34b1af61b5a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21a716b0b9076dd5c8f5b68f386bc77c7bdf099a82c3d37386d34b1af61b5a55", kill_on_drop: false }`
[INFO] [stdout] 21a716b0b9076dd5c8f5b68f386bc77c7bdf099a82c3d37386d34b1af61b5a55
