Dec 19 05:29:57.408 INFO checking withoutboats/guessing_game against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:29:57.408 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/withoutboats/guessing_game:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:29:57.819 INFO [stdout] 94fcfa9caf30f40971f88a5e627bbee0536c8aabfb0fd496fc4c704e813174a1
Dec 19 05:29:57.824 INFO running `"docker" "start" "-a" "94fcfa9caf30f40971f88a5e627bbee0536c8aabfb0fd496fc4c704e813174a1"`
Dec 19 05:29:59.548 INFO [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
Dec 19 05:29:59.904 INFO [stderr] warning: unused variable: `secret`
Dec 19 05:29:59.904 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 19 05:29:59.904 INFO [stderr]    |
Dec 19 05:29:59.904 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.904 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 19 05:29:59.920 INFO [stderr]    |
Dec 19 05:29:59.920 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:29:59.920 INFO [stderr] 
Dec 19 05:29:59.920 INFO [stderr] warning: unused variable: `guess`
Dec 19 05:29:59.920 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 19 05:29:59.920 INFO [stderr]    |
Dec 19 05:29:59.920 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.920 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 19 05:29:59.920 INFO [stderr] 
Dec 19 05:29:59.920 INFO [stderr] warning: unused variable: `f`
Dec 19 05:29:59.920 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 19 05:29:59.920 INFO [stderr]    |
Dec 19 05:29:59.920 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 19 05:29:59.920 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 19 05:29:59.920 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: struct is never constructed: `Secret`
Dec 19 05:29:59.924 INFO [stderr]  --> src/secret_number/mod.rs:7:1
Dec 19 05:29:59.924 INFO [stderr]   |
Dec 19 05:29:59.924 INFO [stderr] 7 | pub struct Secret {
Dec 19 05:29:59.924 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr]   |
Dec 19 05:29:59.924 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: method is never used: `random`
Dec 19 05:29:59.924 INFO [stderr]   --> src/secret_number/mod.rs:11:5
Dec 19 05:29:59.924 INFO [stderr]    |
Dec 19 05:29:59.924 INFO [stderr] 11 |     pub fn random() -> Secret {
Dec 19 05:29:59.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: method is never used: `new`
Dec 19 05:29:59.924 INFO [stderr]   --> src/secret_number/mod.rs:15:5
Dec 19 05:29:59.924 INFO [stderr]    |
Dec 19 05:29:59.924 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: method is never used: `guess`
Dec 19 05:29:59.924 INFO [stderr]   --> src/secret_number/mod.rs:19:5
Dec 19 05:29:59.924 INFO [stderr]    |
Dec 19 05:29:59.924 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: method is never used: `secret`
Dec 19 05:29:59.924 INFO [stderr]   --> src/secret_number/mod.rs:23:5
Dec 19 05:29:59.924 INFO [stderr]    |
Dec 19 05:29:59.924 INFO [stderr] 23 |     fn secret(&self) -> u16 {
Dec 19 05:29:59.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: variant is never constructed: `TooHigh`
Dec 19 05:29:59.924 INFO [stderr]   --> src/secret_number/mod.rs:30:5
Dec 19 05:29:59.924 INFO [stderr]    |
Dec 19 05:29:59.924 INFO [stderr] 30 |     TooHigh(u16),
Dec 19 05:29:59.924 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 05:29:59.924 INFO [stderr] 
Dec 19 05:29:59.924 INFO [stderr] warning: variant is never constructed: `TooLow`
Dec 19 05:29:59.925 INFO [stderr]   --> src/secret_number/mod.rs:31:5
Dec 19 05:29:59.925 INFO [stderr]    |
Dec 19 05:29:59.925 INFO [stderr] 31 |     TooLow(u16),
Dec 19 05:29:59.925 INFO [stderr]    |     ^^^^^^^^^^^
Dec 19 05:29:59.925 INFO [stderr] 
Dec 19 05:29:59.925 INFO [stderr] warning: variant is never constructed: `NotANumber`
Dec 19 05:29:59.925 INFO [stderr]   --> src/secret_number/mod.rs:32:5
Dec 19 05:29:59.925 INFO [stderr]    |
Dec 19 05:29:59.925 INFO [stderr] 32 |     NotANumber,
Dec 19 05:29:59.925 INFO [stderr]    |     ^^^^^^^^^^
Dec 19 05:29:59.925 INFO [stderr] 
Dec 19 05:29:59.982 INFO [stderr] warning: unused variable: `secret`
Dec 19 05:29:59.982 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 19 05:29:59.992 INFO [stderr]    |
Dec 19 05:29:59.992 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.992 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 19 05:29:59.992 INFO [stderr]    |
Dec 19 05:29:59.992 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:29:59.992 INFO [stderr] 
Dec 19 05:29:59.992 INFO [stderr] warning: unused variable: `guess`
Dec 19 05:29:59.992 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 19 05:29:59.992 INFO [stderr]    |
Dec 19 05:29:59.992 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.992 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 19 05:29:59.992 INFO [stderr] 
Dec 19 05:29:59.992 INFO [stderr] warning: unused variable: `f`
Dec 19 05:29:59.992 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 19 05:29:59.992 INFO [stderr]    |
Dec 19 05:29:59.992 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 19 05:29:59.992 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 19 05:29:59.992 INFO [stderr] 
Dec 19 05:30:00.015 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.015 INFO [stderr]   --> src/secret_number/tests.rs:18:9
Dec 19 05:30:00.015 INFO [stderr]    |
Dec 19 05:30:00.015 INFO [stderr] 18 |     let mut secret = Secret::new(0);
Dec 19 05:30:00.015 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.015 INFO [stderr]    |         |
Dec 19 05:30:00.015 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.015 INFO [stderr]    |
Dec 19 05:30:00.015 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:30:00.015 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:24:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.024 INFO [stderr] 24 |     let mut secret = Secret::new(0);
Dec 19 05:30:00.024 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.024 INFO [stderr]    |         |
Dec 19 05:30:00.024 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.024 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:30:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.024 INFO [stderr] 30 |     let mut secret = Secret::new(1);
Dec 19 05:30:00.024 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.024 INFO [stderr]    |         |
Dec 19 05:30:00.024 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.024 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:36:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.024 INFO [stderr] 36 |     let mut secret = Secret::new(0);
Dec 19 05:30:00.024 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.024 INFO [stderr]    |         |
Dec 19 05:30:00.024 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.024 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:42:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.024 INFO [stderr] 42 |     let mut secret = Secret::new(1);
Dec 19 05:30:00.024 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.024 INFO [stderr]    |         |
Dec 19 05:30:00.024 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.024 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:49:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.024 INFO [stderr] 49 |     let mut secret = Secret::new(0);
Dec 19 05:30:00.024 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.024 INFO [stderr]    |         |
Dec 19 05:30:00.024 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.024 INFO [stderr] 
Dec 19 05:30:00.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:00.024 INFO [stderr]   --> src/secret_number/tests.rs:57:9
Dec 19 05:30:00.024 INFO [stderr]    |
Dec 19 05:30:00.025 INFO [stderr] 57 |     let mut secret = Secret::new(0);
Dec 19 05:30:00.025 INFO [stderr]    |         ----^^^^^^
Dec 19 05:30:00.025 INFO [stderr]    |         |
Dec 19 05:30:00.025 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:00.025 INFO [stderr] 
Dec 19 05:30:00.060 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 19 05:30:00.878 INFO running `"docker" "inspect" "94fcfa9caf30f40971f88a5e627bbee0536c8aabfb0fd496fc4c704e813174a1"`
Dec 19 05:30:01.140 INFO running `"docker" "rm" "-f" "94fcfa9caf30f40971f88a5e627bbee0536c8aabfb0fd496fc4c704e813174a1"`
Dec 19 05:30:01.614 INFO [stdout] 94fcfa9caf30f40971f88a5e627bbee0536c8aabfb0fd496fc4c704e813174a1