Dec 04 13:42:38.654 INFO checking mrozycki/rust-fst against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 13:42:38.654 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 13:42:38.894 INFO [stdout] 69abed25f1d2f43f58605e4c239259c96881d15269624ea5dd6bf14143362feb
Dec 04 13:42:38.901 INFO running `"docker" "start" "-a" "69abed25f1d2f43f58605e4c239259c96881d15269624ea5dd6bf14143362feb"`
Dec 04 13:42:39.408 INFO [stderr] usermod: no changes
Dec 04 13:42:39.438 INFO [stderr]     Checking rust-fst v0.1.0 (/source)
Dec 04 13:42:39.735 INFO [stderr] warning: method is never used: `empty`
Dec 04 13:42:39.735 INFO [stderr]   --> src/fst.rs:36:5
Dec 04 13:42:39.735 INFO [stderr]    |
Dec 04 13:42:39.735 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 04 13:42:39.735 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.735 INFO [stderr]    |
Dec 04 13:42:39.735 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 13:42:39.735 INFO [stderr] 
Dec 04 13:42:39.735 INFO [stderr] warning: method is never used: `string`
Dec 04 13:42:39.735 INFO [stderr]   --> src/fst.rs:60:5
Dec 04 13:42:39.735 INFO [stderr]    |
Dec 04 13:42:39.735 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 04 13:42:39.735 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.735 INFO [stderr] 
Dec 04 13:42:39.735 INFO [stderr] warning: method is never used: `and`
Dec 04 13:42:39.735 INFO [stderr]   --> src/fst.rs:83:5
Dec 04 13:42:39.735 INFO [stderr]    |
Dec 04 13:42:39.735 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 04 13:42:39.735 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.735 INFO [stderr] 
Dec 04 13:42:39.735 INFO [stderr] warning: method is never used: `and_optionally`
Dec 04 13:42:39.735 INFO [stderr]   --> src/fst.rs:97:5
Dec 04 13:42:39.735 INFO [stderr]    |
Dec 04 13:42:39.735 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 04 13:42:39.735 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.735 INFO [stderr] 
Dec 04 13:42:39.735 INFO [stderr] warning: method is never used: `repeated`
Dec 04 13:42:39.735 INFO [stderr]    --> src/fst.rs:159:5
Dec 04 13:42:39.735 INFO [stderr]     |
Dec 04 13:42:39.736 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 04 13:42:39.736 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.736 INFO [stderr] 
Dec 04 13:42:39.743 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.743 INFO [stderr]    --> src/fst.rs:217:9
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 04 13:42:39.743 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 13:42:39.743 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.743 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 04 13:42:39.743 INFO [stderr] 
Dec 04 13:42:39.743 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.743 INFO [stderr]    --> src/fst.rs:219:13
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 04 13:42:39.743 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.743 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 04 13:42:39.743 INFO [stderr] 
Dec 04 13:42:39.743 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.743 INFO [stderr]    --> src/fst.rs:223:13
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 04 13:42:39.743 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.743 INFO [stderr]     |
Dec 04 13:42:39.743 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.743 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 04 13:42:39.743 INFO [stderr] 
Dec 04 13:42:39.747 INFO [stderr] warning: method is never used: `empty`
Dec 04 13:42:39.747 INFO [stderr]   --> src/fst.rs:36:5
Dec 04 13:42:39.747 INFO [stderr]    |
Dec 04 13:42:39.747 INFO [stderr] 36 |     pub fn empty() -> Self {
Dec 04 13:42:39.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.747 INFO [stderr]    |
Dec 04 13:42:39.747 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 13:42:39.747 INFO [stderr] 
Dec 04 13:42:39.747 INFO [stderr] warning: method is never used: `string`
Dec 04 13:42:39.747 INFO [stderr]   --> src/fst.rs:60:5
Dec 04 13:42:39.747 INFO [stderr]    |
Dec 04 13:42:39.747 INFO [stderr] 60 |     pub fn string(s: &str) -> Self {
Dec 04 13:42:39.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.747 INFO [stderr] 
Dec 04 13:42:39.747 INFO [stderr] warning: method is never used: `and`
Dec 04 13:42:39.747 INFO [stderr]   --> src/fst.rs:83:5
Dec 04 13:42:39.747 INFO [stderr]    |
Dec 04 13:42:39.747 INFO [stderr] 83 |     pub fn and(m1: Self, m2: Self) -> Self {
Dec 04 13:42:39.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.747 INFO [stderr] 
Dec 04 13:42:39.747 INFO [stderr] warning: method is never used: `and_optionally`
Dec 04 13:42:39.747 INFO [stderr]   --> src/fst.rs:97:5
Dec 04 13:42:39.747 INFO [stderr]    |
Dec 04 13:42:39.747 INFO [stderr] 97 |     pub fn and_optionally(m1: Self, m2: Self) -> Self {
Dec 04 13:42:39.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.747 INFO [stderr] 
Dec 04 13:42:39.747 INFO [stderr] warning: method is never used: `repeated`
Dec 04 13:42:39.747 INFO [stderr]    --> src/fst.rs:159:5
Dec 04 13:42:39.747 INFO [stderr]     |
Dec 04 13:42:39.747 INFO [stderr] 159 |     pub fn repeated(mut m: Self) -> Self {
Dec 04 13:42:39.747 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.747 INFO [stderr] 
Dec 04 13:42:39.755 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.755 INFO [stderr]    --> src/fst.rs:217:9
Dec 04 13:42:39.755 INFO [stderr]     |
Dec 04 13:42:39.755 INFO [stderr] 217 |         writeln!(f, "{} {}", self.state_count, self.transitions.len());
Dec 04 13:42:39.755 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.756 INFO [stderr]     |
Dec 04 13:42:39.756 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 13:42:39.756 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.756 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 04 13:42:39.756 INFO [stderr] 
Dec 04 13:42:39.756 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.756 INFO [stderr]    --> src/fst.rs:219:13
Dec 04 13:42:39.756 INFO [stderr]     |
Dec 04 13:42:39.756 INFO [stderr] 219 |             writeln!(f, "{}\t{}\t{}\t{}", t.from, t.to, t.on.unwrap_or('`'), t.with.unwrap_or_default());
Dec 04 13:42:39.756 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.756 INFO [stderr]     |
Dec 04 13:42:39.756 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.756 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 04 13:42:39.756 INFO [stderr] 
Dec 04 13:42:39.756 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:42:39.756 INFO [stderr]    --> src/fst.rs:223:13
Dec 04 13:42:39.756 INFO [stderr]     |
Dec 04 13:42:39.756 INFO [stderr] 223 |             write!(f, "{} ", state);
Dec 04 13:42:39.756 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:42:39.756 INFO [stderr]     |
Dec 04 13:42:39.756 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:42:39.756 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 04 13:42:39.756 INFO [stderr] 
Dec 04 13:42:39.771 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 04 13:42:39.775 INFO [stderr] su: No module specific data is present
Dec 04 13:42:40.043 INFO running `"docker" "inspect" "69abed25f1d2f43f58605e4c239259c96881d15269624ea5dd6bf14143362feb"`
Dec 04 13:42:40.406 INFO running `"docker" "rm" "-f" "69abed25f1d2f43f58605e4c239259c96881d15269624ea5dd6bf14143362feb"`
Dec 04 13:42:40.639 INFO [stdout] 69abed25f1d2f43f58605e4c239259c96881d15269624ea5dd6bf14143362feb