[INFO] fetching crate toktkn 0.1.2...
[INFO] checking toktkn-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate toktkn 0.1.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate toktkn 0.1.2
[INFO] finished tweaking crates.io crate toktkn 0.1.2
[INFO] tweaked toml for crates.io crate toktkn 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate toktkn 0.1.2 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 toktkn 0.1.2 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f6d1770a9e478009b3a6f87434e593299e72bb86daae08674dbfcbe91898cf4e
[INFO] running `Command { std: "docker" "start" "-a" "f6d1770a9e478009b3a6f87434e593299e72bb86daae08674dbfcbe91898cf4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6d1770a9e478009b3a6f87434e593299e72bb86daae08674dbfcbe91898cf4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6d1770a9e478009b3a6f87434e593299e72bb86daae08674dbfcbe91898cf4e", kill_on_drop: false }`
[INFO] [stdout] f6d1770a9e478009b3a6f87434e593299e72bb86daae08674dbfcbe91898cf4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 974648491cfba78d62ba294b467cbb1e25e923b1421dbaca6ecd1a954dd6b434
[INFO] running `Command { std: "docker" "start" "-a" "974648491cfba78d62ba294b467cbb1e25e923b1421dbaca6ecd1a954dd6b434", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.2
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]    Compiling indexmap v2.8.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]     Checking signal-hook v0.3.17
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling rstest_macros v0.24.0
[INFO] [stderr]     Checking getrandom v0.3.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking deunicode v1.6.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking uuid v1.16.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking signal-hook-mio v0.2.4
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling pyo3-build-config v0.24.0
[INFO] [stderr]     Checking tqdm v0.7.0
[INFO] [stderr]     Checking fake v3.1.0
[INFO] [stderr]    Compiling pyo3-ffi v0.24.0
[INFO] [stderr]    Compiling pyo3-macros-backend v0.24.0
[INFO] [stderr]    Compiling pyo3 v0.24.0
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]    Compiling serde_with_macros v3.12.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking rstest v0.24.0
[INFO] [stderr]    Compiling pyo3-macros v0.24.0
[INFO] [stderr]     Checking serde_with v3.12.0
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking toktkn v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `l` is never read
[INFO] [stdout]    --> src/tokenizer.rs:145:21
[INFO] [stdout]     |
[INFO] [stdout] 145 |                     l.1 = Token::MAX;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `l` is never read
[INFO] [stdout]    --> src/tokenizer.rs:145:21
[INFO] [stdout]     |
[INFO] [stdout] 145 |                     l.1 = Token::MAX;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bindings.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |         pub fn preprocess(&self, mut text: String) -> 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<Vec<u32>, Infallible>
[INFO] [stdout]   --> src/bindings.rs:69:48
[INFO] [stdout]    |
[INFO] [stdout] 69 |         pub fn train(&mut self, text: &str) -> Vec<Token>{
[INFO] [stdout]    |                                                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u32>, Infallible>
[INFO] [stdout]   --> src/bindings.rs:73:49
[INFO] [stdout]    |
[INFO] [stdout] 73 |         pub fn encode(&mut self, text: &str) -> Vec<Token>{
[INFO] [stdout]    |                                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bindings.rs:77:54
[INFO] [stdout]    |
[INFO] [stdout] 77 |         pub fn decode(&mut self, ids: Vec<Token>) -> String{
[INFO] [stdout]    |                                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toktkn` (lib) due to 4 previous errors; 1 warning emitted
[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]   --> src/bindings.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |         pub fn preprocess(&self, mut text: String) -> 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<Vec<u32>, Infallible>
[INFO] [stdout]   --> src/bindings.rs:69:48
[INFO] [stdout]    |
[INFO] [stdout] 69 |         pub fn train(&mut self, text: &str) -> Vec<Token>{
[INFO] [stdout]    |                                                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u32>, Infallible>
[INFO] [stdout]   --> src/bindings.rs:73:49
[INFO] [stdout]    |
[INFO] [stdout] 73 |         pub fn encode(&mut self, text: &str) -> Vec<Token>{
[INFO] [stdout]    |                                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bindings.rs:77:54
[INFO] [stdout]    |
[INFO] [stdout] 77 |         pub fn decode(&mut self, ids: Vec<Token>) -> String{
[INFO] [stdout]    |                                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toktkn` (lib test) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "974648491cfba78d62ba294b467cbb1e25e923b1421dbaca6ecd1a954dd6b434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "974648491cfba78d62ba294b467cbb1e25e923b1421dbaca6ecd1a954dd6b434", kill_on_drop: false }`
[INFO] [stdout] 974648491cfba78d62ba294b467cbb1e25e923b1421dbaca6ecd1a954dd6b434
