Dec 11 13:12:38.200 INFO checking mrozycki/rust-fst against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 13:12:38.200 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 13:12:38.527 INFO [stdout] 4ec6afa67b8bab1f89b131249fa13107a726898f0fed05b4d9285d031812ed92
Dec 11 13:12:38.530 INFO running `"docker" "start" "-a" "4ec6afa67b8bab1f89b131249fa13107a726898f0fed05b4d9285d031812ed92"`
Dec 11 13:12:39.124 INFO [stderr] usermod: no changes
Dec 11 13:12:39.142 INFO [stderr]     Checking rust-fst v0.1.0 (/source)
Dec 11 13:12:39.432 INFO [stderr] warning: method is never used: `empty`
Dec 11 13:12:39.432 INFO [stderr]   --> src/fst.rs:36:5
Dec 11 13:12:39.432 INFO [stderr]    |
Dec 11 13:12:39.432 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 11 13:12:39.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.432 INFO [stderr]    |
Dec 11 13:12:39.432 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:12:39.432 INFO [stderr] 
Dec 11 13:12:39.432 INFO [stderr] warning: method is never used: `string`
Dec 11 13:12:39.432 INFO [stderr]   --> src/fst.rs:60:5
Dec 11 13:12:39.432 INFO [stderr]    |
Dec 11 13:12:39.432 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 11 13:12:39.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.432 INFO [stderr] 
Dec 11 13:12:39.433 INFO [stderr] warning: method is never used: `and`
Dec 11 13:12:39.433 INFO [stderr]   --> src/fst.rs:83:5
Dec 11 13:12:39.433 INFO [stderr]    |
Dec 11 13:12:39.433 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 11 13:12:39.433 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.433 INFO [stderr] 
Dec 11 13:12:39.433 INFO [stderr] warning: method is never used: `and_optionally`
Dec 11 13:12:39.433 INFO [stderr]   --> src/fst.rs:97:5
Dec 11 13:12:39.433 INFO [stderr]    |
Dec 11 13:12:39.433 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 11 13:12:39.433 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.433 INFO [stderr] 
Dec 11 13:12:39.433 INFO [stderr] warning: method is never used: `repeated`
Dec 11 13:12:39.433 INFO [stderr]    --> src/fst.rs:159:5
Dec 11 13:12:39.433 INFO [stderr]     |
Dec 11 13:12:39.433 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 11 13:12:39.433 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.433 INFO [stderr] 
Dec 11 13:12:39.436 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.436 INFO [stderr]    --> src/fst.rs:217:9
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 11 13:12:39.436 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 13:12:39.436 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.436 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.436 INFO [stderr] 
Dec 11 13:12:39.436 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.436 INFO [stderr]    --> src/fst.rs:219:13
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 11 13:12:39.436 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.436 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.436 INFO [stderr] 
Dec 11 13:12:39.436 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.436 INFO [stderr]    --> src/fst.rs:223:13
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 11 13:12:39.436 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.436 INFO [stderr]     |
Dec 11 13:12:39.436 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.436 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.436 INFO [stderr] 
Dec 11 13:12:39.517 INFO [stderr] warning: method is never used: `empty`
Dec 11 13:12:39.517 INFO [stderr]   --> src/fst.rs:36:5
Dec 11 13:12:39.517 INFO [stderr]    |
Dec 11 13:12:39.517 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 11 13:12:39.517 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.517 INFO [stderr]    |
Dec 11 13:12:39.517 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:12:39.517 INFO [stderr] 
Dec 11 13:12:39.517 INFO [stderr] warning: method is never used: `string`
Dec 11 13:12:39.517 INFO [stderr]   --> src/fst.rs:60:5
Dec 11 13:12:39.517 INFO [stderr]    |
Dec 11 13:12:39.517 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 11 13:12:39.517 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.517 INFO [stderr] 
Dec 11 13:12:39.517 INFO [stderr] warning: method is never used: `and`
Dec 11 13:12:39.517 INFO [stderr]   --> src/fst.rs:83:5
Dec 11 13:12:39.517 INFO [stderr]    |
Dec 11 13:12:39.517 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 11 13:12:39.517 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.517 INFO [stderr] 
Dec 11 13:12:39.517 INFO [stderr] warning: method is never used: `and_optionally`
Dec 11 13:12:39.517 INFO [stderr]   --> src/fst.rs:97:5
Dec 11 13:12:39.517 INFO [stderr]    |
Dec 11 13:12:39.517 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 11 13:12:39.517 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.517 INFO [stderr] 
Dec 11 13:12:39.517 INFO [stderr] warning: method is never used: `repeated`
Dec 11 13:12:39.517 INFO [stderr]    --> src/fst.rs:159:5
Dec 11 13:12:39.517 INFO [stderr]     |
Dec 11 13:12:39.517 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 11 13:12:39.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.517 INFO [stderr] 
Dec 11 13:12:39.526 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.526 INFO [stderr]    --> src/fst.rs:217:9
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 11 13:12:39.526 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 13:12:39.526 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.526 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.526 INFO [stderr] 
Dec 11 13:12:39.526 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.526 INFO [stderr]    --> src/fst.rs:219:13
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 11 13:12:39.526 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.526 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.526 INFO [stderr] 
Dec 11 13:12:39.526 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:12:39.526 INFO [stderr]    --> src/fst.rs:223:13
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 11 13:12:39.526 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:12:39.526 INFO [stderr]     |
Dec 11 13:12:39.526 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:12:39.526 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:12:39.526 INFO [stderr] 
Dec 11 13:12:39.540 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
Dec 11 13:12:39.541 INFO [stderr] su: No module specific data is present
Dec 11 13:12:39.781 INFO running `"docker" "inspect" "4ec6afa67b8bab1f89b131249fa13107a726898f0fed05b4d9285d031812ed92"`
Dec 11 13:12:39.881 INFO running `"docker" "rm" "-f" "4ec6afa67b8bab1f89b131249fa13107a726898f0fed05b4d9285d031812ed92"`
Dec 11 13:12:39.978 INFO [stdout] 4ec6afa67b8bab1f89b131249fa13107a726898f0fed05b4d9285d031812ed92