[INFO] fetching crate hangman_solver 0.6.0... [INFO] checking hangman_solver-0.6.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate hangman_solver 0.6.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate hangman_solver 0.6.0 [INFO] finished tweaking crates.io crate hangman_solver 0.6.0 [INFO] tweaked toml for crates.io crate hangman_solver 0.6.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate hangman_solver 0.6.0 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] crate crates.io crate hangman_solver 0.6.0 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7f3e394c13c72a0416aa1695a48ce4e35e1ec42c9c48bf51d3f7c13795ad0874 [INFO] running `Command { std: "docker" "start" "-a" "7f3e394c13c72a0416aa1695a48ce4e35e1ec42c9c48bf51d3f7c13795ad0874", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7f3e394c13c72a0416aa1695a48ce4e35e1ec42c9c48bf51d3f7c13795ad0874", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f3e394c13c72a0416aa1695a48ce4e35e1ec42c9c48bf51d3f7c13795ad0874", kill_on_drop: false }` [INFO] [stdout] 7f3e394c13c72a0416aa1695a48ce4e35e1ec42c9c48bf51d3f7c13795ad0874 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7494ad2d4346223f84c362cad80215ab2e1deeb2b76c2ca39a07a315029f1a46 [INFO] running `Command { std: "docker" "start" "-a" "7494ad2d4346223f84c362cad80215ab2e1deeb2b76c2ca39a07a315029f1a46", kill_on_drop: false }` [INFO] [stderr] Compiling rustix v1.0.7 [INFO] [stderr] Compiling easy-parallel v3.3.1 [INFO] [stderr] Checking unwrap-infallible v0.1.5 [INFO] [stderr] Compiling itertools v0.13.0 [INFO] [stderr] Compiling Inflector v0.11.4 [INFO] [stderr] Checking counter v0.6.0 [INFO] [stderr] Checking terminal_size v0.4.2 [INFO] [stderr] Compiling hangman_solver v0.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique [INFO] [stdout] --> build.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 29 | #[derive(Clone, Eq, PartialEq, Debug)] [INFO] [stdout] | --------- in this derive macro expansion [INFO] [stdout] ... [INFO] [stdout] 33 | pub conv: StrConv, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the address of the same function can vary between different codegen units [INFO] [stdout] = note: furthermore, different functions could have the same address after being merged together [INFO] [stdout] = note: for more information visit [INFO] [stdout] = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: hangman_solver@0.6.0: start main 150ns [INFO] [stderr] warning: hangman_solver@0.6.0: before write_words_data 175.682766ms [INFO] [stderr] warning: hangman_solver@0.6.0: 114264 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data en bytes 866.63056ms [INFO] [stderr] warning: hangman_solver@0.6.0: 184184 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic_umlauts bytes 1.164883805s [INFO] [stderr] warning: hangman_solver@0.6.0: 168116 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic bytes 1.623474599s [INFO] [stderr] warning: hangman_solver@0.6.0: 4522798 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_umlauts bytes 38.85845089s [INFO] [stderr] warning: hangman_solver@0.6.0: 3088640 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de bytes 39.85107874s [INFO] [stderr] warning: hangman_solver@0.6.0: after write_words_data 40.298458734s [INFO] [stderr] warning: hangman_solver@0.6.0: end main 40.304495973s [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/mod.rs:52:5 [INFO] [stdout] | [INFO] [stdout] 52 | / solve( [INFO] [stdout] 53 | | pattern, [INFO] [stdout] 54 | | invalid_letters, [INFO] [stdout] 55 | | letters_in_pattern_have_no_other_occurrences, [INFO] [stdout] 56 | | language, [INFO] [stdout] 57 | | max_words_to_collect, [INFO] [stdout] 58 | | ) [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result + '_, fn(char) -> Result {Result::::Ok}>, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | / { [INFO] [stdout] 29 | | Ok(self.iter_chars().map(Result::Ok)) [INFO] [stdout] 30 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mustuse_in_always_ok)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result + '_, fn(char) -> Result {Result::::Ok}>, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | Ok(self.iter_chars().map(Result::Ok)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:33:61 [INFO] [stdout] | [INFO] [stdout] 33 | fn try_count_chars(&self) -> Result { [INFO] [stdout] | _____________________________________________________________^ [INFO] [stdout] 34 | | Ok(CC::char_count(self)) [INFO] [stdout] 35 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | Ok(CC::char_count(self)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:38:71 [INFO] [stdout] | [INFO] [stdout] 38 | fn try_get_first_char(&self) -> Result, Self::Error> { [INFO] [stdout] | _______________________________________________________________________^ [INFO] [stdout] 39 | | Ok(CC::first_char(self)) [INFO] [stdout] 40 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | Ok(CC::first_char(self)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:83:17 [INFO] [stdout] | [INFO] [stdout] 83 | string.try_count_chars().unwrap_infallible(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:95:21 [INFO] [stdout] | [INFO] [stdout] 95 | assert!(string.try_get_first_char().unwrap_infallible().is_some()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:98:17 [INFO] [stdout] | [INFO] [stdout] 98 | string.try_count_chars().unwrap_infallible() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:102:17 [INFO] [stdout] | [INFO] [stdout] 102 | string.try_get_first_char().unwrap_infallible() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:106:17 [INFO] [stdout] | [INFO] [stdout] 106 | / string [INFO] [stdout] 107 | | .try_iter_chars() [INFO] [stdout] 108 | | .unwrap_infallible() [INFO] [stdout] 109 | | .collect::, _>>() [INFO] [stdout] | |___________________________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result::Error>> + '_, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:106:17 [INFO] [stdout] | [INFO] [stdout] 106 | / string [INFO] [stdout] 107 | | .try_iter_chars() [INFO] [stdout] | |_____________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:116:21 [INFO] [stdout] | [INFO] [stdout] 116 | assert!(string.try_get_first_char().unwrap_infallible().is_some()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:119:17 [INFO] [stdout] | [INFO] [stdout] 119 | string.try_count_chars().unwrap_infallible() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:123:17 [INFO] [stdout] | [INFO] [stdout] 123 | string.try_get_first_char().unwrap_infallible() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:127:17 [INFO] [stdout] | [INFO] [stdout] 127 | / string [INFO] [stdout] 128 | | .try_iter_chars() [INFO] [stdout] 129 | | .unwrap_infallible() [INFO] [stdout] 130 | | .collect::, _>>() [INFO] [stdout] | |___________________________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result::Error>> + '_, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:127:17 [INFO] [stdout] | [INFO] [stdout] 127 | / string [INFO] [stdout] 128 | | .try_iter_chars() [INFO] [stdout] | |_____________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/mod.rs:87:18 [INFO] [stdout] | [INFO] [stdout] 87 | let hr = super::solve( [INFO] [stdout] | __________________^ [INFO] [stdout] 88 | | "__r_el_ier", [INFO] [stdout] 89 | | &['i', 'r', 'x', 'ä'], [INFO] [stdout] 90 | | true, [INFO] [stdout] 91 | | crate::Language::DeUmlauts, [INFO] [stdout] 92 | | None, [INFO] [stdout] 93 | | ) [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/mod.rs:121:18 [INFO] [stdout] | [INFO] [stdout] 121 | let hr = super::solve( [INFO] [stdout] | __________________^ [INFO] [stdout] 122 | | "__r_el_ier", [INFO] [stdout] 123 | | &['i', 'r', 'x', 'ä'], [INFO] [stdout] 124 | | true, [INFO] [stdout] 125 | | crate::Language::DeUmlauts, [INFO] [stdout] 126 | | Some(1), [INFO] [stdout] 127 | | ) [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: hangman_solver@0.6.0: start main 150ns [INFO] [stderr] warning: hangman_solver@0.6.0: before write_words_data 175.682766ms [INFO] [stderr] warning: hangman_solver@0.6.0: 114264 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data en bytes 866.63056ms [INFO] [stderr] warning: hangman_solver@0.6.0: 184184 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic_umlauts bytes 1.164883805s [INFO] [stderr] warning: hangman_solver@0.6.0: 168116 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic bytes 1.623474599s [INFO] [stderr] warning: hangman_solver@0.6.0: 4522798 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_umlauts bytes 38.85845089s [INFO] [stderr] warning: hangman_solver@0.6.0: 3088640 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de bytes 39.85107874s [INFO] [stderr] warning: hangman_solver@0.6.0: after write_words_data 40.298458734s [INFO] [stderr] warning: hangman_solver@0.6.0: end main 40.304495973s [INFO] [stderr] error: could not compile `hangman_solver` (lib test) due to 16 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/mod.rs:52:5 [INFO] [stdout] | [INFO] [stdout] 52 | / solve( [INFO] [stdout] 53 | | pattern, [INFO] [stdout] 54 | | invalid_letters, [INFO] [stdout] 55 | | letters_in_pattern_have_no_other_occurrences, [INFO] [stdout] 56 | | language, [INFO] [stdout] 57 | | max_words_to_collect, [INFO] [stdout] 58 | | ) [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result + '_, fn(char) -> Result {Result::::Ok}>, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | / { [INFO] [stdout] 29 | | Ok(self.iter_chars().map(Result::Ok)) [INFO] [stdout] 30 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mustuse_in_always_ok)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this type continue be must used: Result + '_, fn(char) -> Result {Result::::Ok}>, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | Ok(self.iter_chars().map(Result::Ok)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:33:61 [INFO] [stdout] | [INFO] [stdout] 33 | fn try_count_chars(&self) -> Result { [INFO] [stdout] | _____________________________________________________________^ [INFO] [stdout] 34 | | Ok(CC::char_count(self)) [INFO] [stdout] 35 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/solver/char_collection.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | Ok(CC::char_count(self)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:38:71 [INFO] [stdout] | [INFO] [stdout] 38 | fn try_get_first_char(&self) -> Result, Self::Error> { [INFO] [stdout] | _______________________________________________________________________^ [INFO] [stdout] 39 | | Ok(CC::first_char(self)) [INFO] [stdout] 40 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/solver/char_collection.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | Ok(CC::first_char(self)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: hangman_solver@0.6.0: start main 150ns [INFO] [stderr] warning: hangman_solver@0.6.0: before write_words_data 175.682766ms [INFO] [stderr] warning: hangman_solver@0.6.0: 114264 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data en bytes 866.63056ms [INFO] [stderr] warning: hangman_solver@0.6.0: 184184 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic_umlauts bytes 1.164883805s [INFO] [stderr] warning: hangman_solver@0.6.0: 168116 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_basic bytes 1.623474599s [INFO] [stderr] warning: hangman_solver@0.6.0: 4522798 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de_umlauts bytes 38.85845089s [INFO] [stderr] warning: hangman_solver@0.6.0: 3088640 [INFO] [stderr] warning: hangman_solver@0.6.0: -- write_words_data de bytes 39.85107874s [INFO] [stderr] warning: hangman_solver@0.6.0: after write_words_data 40.298458734s [INFO] [stderr] warning: hangman_solver@0.6.0: end main 40.304495973s [INFO] [stderr] error: could not compile `hangman_solver` (lib) due to 5 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "7494ad2d4346223f84c362cad80215ab2e1deeb2b76c2ca39a07a315029f1a46", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7494ad2d4346223f84c362cad80215ab2e1deeb2b76c2ca39a07a315029f1a46", kill_on_drop: false }` [INFO] [stdout] 7494ad2d4346223f84c362cad80215ab2e1deeb2b76c2ca39a07a315029f1a46