Dec 17 19:14:44.497 INFO checking mrozycki/rust-fst against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:14:44.497 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mrozycki/rust-fst:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:14:44.901 INFO [stdout] fffeb1fa865ce64e863eb202d86e176b6830455a661da16b7885f9f1dad6b907
Dec 17 19:14:44.906 INFO running `"docker" "start" "-a" "fffeb1fa865ce64e863eb202d86e176b6830455a661da16b7885f9f1dad6b907"`
Dec 17 19:14:45.544 INFO [stderr]     Checking rust-fst v0.1.0 (/opt/crater/workdir)
Dec 17 19:14:45.809 INFO [stderr] warning: method is never used: `empty`
Dec 17 19:14:45.809 INFO [stderr]   --> src/fst.rs:36:5
Dec 17 19:14:45.809 INFO [stderr]    |
Dec 17 19:14:45.809 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 17 19:14:45.810 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.810 INFO [stderr]    |
Dec 17 19:14:45.810 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:14:45.810 INFO [stderr] 
Dec 17 19:14:45.811 INFO [stderr] warning: method is never used: `string`
Dec 17 19:14:45.811 INFO [stderr]   --> src/fst.rs:60:5
Dec 17 19:14:45.811 INFO [stderr]    |
Dec 17 19:14:45.811 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 17 19:14:45.811 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.811 INFO [stderr] 
Dec 17 19:14:45.812 INFO [stderr] warning: method is never used: `and`
Dec 17 19:14:45.812 INFO [stderr]   --> src/fst.rs:83:5
Dec 17 19:14:45.812 INFO [stderr]    |
Dec 17 19:14:45.812 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 17 19:14:45.812 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.812 INFO [stderr] 
Dec 17 19:14:45.812 INFO [stderr] warning: method is never used: `and_optionally`
Dec 17 19:14:45.812 INFO [stderr]   --> src/fst.rs:97:5
Dec 17 19:14:45.812 INFO [stderr]    |
Dec 17 19:14:45.812 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 17 19:14:45.812 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.812 INFO [stderr] 
Dec 17 19:14:45.816 INFO [stderr] warning: method is never used: `repeated`
Dec 17 19:14:45.816 INFO [stderr]    --> src/fst.rs:159:5
Dec 17 19:14:45.816 INFO [stderr]     |
Dec 17 19:14:45.816 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 17 19:14:45.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.816 INFO [stderr] 
Dec 17 19:14:45.822 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.822 INFO [stderr]    --> src/fst.rs:217:9
Dec 17 19:14:45.822 INFO [stderr]     |
Dec 17 19:14:45.823 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 17 19:14:45.823 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.823 INFO [stderr]     |
Dec 17 19:14:45.827 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:14:45.830 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.830 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 17 19:14:45.830 INFO [stderr] 
Dec 17 19:14:45.830 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.830 INFO [stderr]    --> src/fst.rs:219:13
Dec 17 19:14:45.830 INFO [stderr]     |
Dec 17 19:14:45.830 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 17 19:14:45.830 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.830 INFO [stderr]     |
Dec 17 19:14:45.830 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.830 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 17 19:14:45.830 INFO [stderr] 
Dec 17 19:14:45.830 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.830 INFO [stderr]    --> src/fst.rs:223:13
Dec 17 19:14:45.830 INFO [stderr]     |
Dec 17 19:14:45.830 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 17 19:14:45.830 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.830 INFO [stderr]     |
Dec 17 19:14:45.830 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.830 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 17 19:14:45.830 INFO [stderr] 
Dec 17 19:14:45.892 INFO [stderr] warning: method is never used: `empty`
Dec 17 19:14:45.892 INFO [stderr]   --> src/fst.rs:36:5
Dec 17 19:14:45.892 INFO [stderr]    |
Dec 17 19:14:45.892 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 17 19:14:45.892 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.893 INFO [stderr]    |
Dec 17 19:14:45.893 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:14:45.893 INFO [stderr] 
Dec 17 19:14:45.893 INFO [stderr] warning: method is never used: `string`
Dec 17 19:14:45.893 INFO [stderr]   --> src/fst.rs:60:5
Dec 17 19:14:45.893 INFO [stderr]    |
Dec 17 19:14:45.893 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 17 19:14:45.893 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.893 INFO [stderr] 
Dec 17 19:14:45.893 INFO [stderr] warning: method is never used: `and`
Dec 17 19:14:45.893 INFO [stderr]   --> src/fst.rs:83:5
Dec 17 19:14:45.893 INFO [stderr]    |
Dec 17 19:14:45.893 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 17 19:14:45.893 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.893 INFO [stderr] 
Dec 17 19:14:45.893 INFO [stderr] warning: method is never used: `and_optionally`
Dec 17 19:14:45.893 INFO [stderr]   --> src/fst.rs:97:5
Dec 17 19:14:45.893 INFO [stderr]    |
Dec 17 19:14:45.893 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 17 19:14:45.893 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.893 INFO [stderr] 
Dec 17 19:14:45.893 INFO [stderr] warning: method is never used: `repeated`
Dec 17 19:14:45.893 INFO [stderr]    --> src/fst.rs:159:5
Dec 17 19:14:45.893 INFO [stderr]     |
Dec 17 19:14:45.893 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 17 19:14:45.893 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.893 INFO [stderr] 
Dec 17 19:14:45.904 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.904 INFO [stderr]    --> src/fst.rs:217:9
Dec 17 19:14:45.904 INFO [stderr]     |
Dec 17 19:14:45.904 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 17 19:14:45.904 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.904 INFO [stderr]     |
Dec 17 19:14:45.904 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:14:45.904 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.904 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 17 19:14:45.904 INFO [stderr] 
Dec 17 19:14:45.904 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.904 INFO [stderr]    --> src/fst.rs:219:13
Dec 17 19:14:45.904 INFO [stderr]     |
Dec 17 19:14:45.904 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 17 19:14:45.904 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.904 INFO [stderr]     |
Dec 17 19:14:45.904 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.904 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 17 19:14:45.904 INFO [stderr] 
Dec 17 19:14:45.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:14:45.905 INFO [stderr]    --> src/fst.rs:223:13
Dec 17 19:14:45.905 INFO [stderr]     |
Dec 17 19:14:45.905 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 17 19:14:45.905 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:14:45.905 INFO [stderr]     |
Dec 17 19:14:45.905 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:14:45.905 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 17 19:14:45.905 INFO [stderr] 
Dec 17 19:14:45.936 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
Dec 17 19:14:46.405 INFO running `"docker" "inspect" "fffeb1fa865ce64e863eb202d86e176b6830455a661da16b7885f9f1dad6b907"`
Dec 17 19:14:46.534 INFO running `"docker" "rm" "-f" "fffeb1fa865ce64e863eb202d86e176b6830455a661da16b7885f9f1dad6b907"`
Dec 17 19:14:46.665 INFO [stdout] fffeb1fa865ce64e863eb202d86e176b6830455a661da16b7885f9f1dad6b907