Dec 19 05:29:57.632 INFO checking withoutboats/guessing_game against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 05:29:57.633 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:29:58.048 INFO [stdout] 2bd7134083ab6cea96f64a258cc59b282e26a4d8a72e3c99dcf058e15b1428b9
Dec 19 05:29:58.056 INFO running `"docker" "start" "-a" "2bd7134083ab6cea96f64a258cc59b282e26a4d8a72e3c99dcf058e15b1428b9"`
Dec 19 05:29:59.529 INFO [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
Dec 19 05:29:59.852 INFO [stderr] warning: unused variable: `secret`
Dec 19 05:29:59.852 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 19 05:29:59.852 INFO [stderr]    |
Dec 19 05:29:59.852 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.852 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 19 05:29:59.852 INFO [stderr]    |
Dec 19 05:29:59.852 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:29:59.852 INFO [stderr] 
Dec 19 05:29:59.852 INFO [stderr] warning: unused variable: `guess`
Dec 19 05:29:59.852 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 19 05:29:59.852 INFO [stderr]    |
Dec 19 05:29:59.852 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.852 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 19 05:29:59.853 INFO [stderr] 
Dec 19 05:29:59.853 INFO [stderr] warning: unused variable: `f`
Dec 19 05:29:59.853 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 19 05:29:59.853 INFO [stderr]    |
Dec 19 05:29:59.853 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 19 05:29:59.853 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 19 05:29:59.853 INFO [stderr] 
Dec 19 05:29:59.853 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.853 INFO [stderr]   --> src/secret_number/tests.rs:18:9
Dec 19 05:29:59.853 INFO [stderr]    |
Dec 19 05:29:59.853 INFO [stderr] 18 |     let mut secret = Secret::new(0);
Dec 19 05:29:59.853 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.853 INFO [stderr]    |         |
Dec 19 05:29:59.853 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.853 INFO [stderr]    |
Dec 19 05:29:59.853 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:29:59.853 INFO [stderr] 
Dec 19 05:29:59.853 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.853 INFO [stderr]   --> src/secret_number/tests.rs:24:9
Dec 19 05:29:59.853 INFO [stderr]    |
Dec 19 05:29:59.853 INFO [stderr] 24 |     let mut secret = Secret::new(0);
Dec 19 05:29:59.853 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.853 INFO [stderr]    |         |
Dec 19 05:29:59.853 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.853 INFO [stderr] 
Dec 19 05:29:59.860 INFO [stderr] warning: unused variable: `secret`
Dec 19 05:29:59.860 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 19 05:29:59.860 INFO [stderr]    |
Dec 19 05:29:59.860 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.860 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 19 05:29:59.860 INFO [stderr]    |
Dec 19 05:29:59.860 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:29:59.860 INFO [stderr] 
Dec 19 05:29:59.860 INFO [stderr] warning: unused variable: `guess`
Dec 19 05:29:59.860 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 19 05:29:59.860 INFO [stderr]    |
Dec 19 05:29:59.860 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.861 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 19 05:29:59.861 INFO [stderr] 
Dec 19 05:29:59.861 INFO [stderr] warning: unused variable: `f`
Dec 19 05:29:59.861 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 19 05:29:59.861 INFO [stderr]    |
Dec 19 05:29:59.861 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 19 05:29:59.861 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 19 05:29:59.861 INFO [stderr] 
Dec 19 05:29:59.862 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.862 INFO [stderr]   --> src/secret_number/tests.rs:30:9
Dec 19 05:29:59.862 INFO [stderr]    |
Dec 19 05:29:59.862 INFO [stderr] 30 |     let mut secret = Secret::new(1);
Dec 19 05:29:59.862 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.862 INFO [stderr]    |         |
Dec 19 05:29:59.862 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.862 INFO [stderr] 
Dec 19 05:29:59.863 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.863 INFO [stderr]   --> src/secret_number/tests.rs:36:9
Dec 19 05:29:59.863 INFO [stderr]    |
Dec 19 05:29:59.863 INFO [stderr] 36 |     let mut secret = Secret::new(0);
Dec 19 05:29:59.863 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.863 INFO [stderr]    |         |
Dec 19 05:29:59.863 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.863 INFO [stderr] 
Dec 19 05:29:59.865 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.865 INFO [stderr]   --> src/secret_number/tests.rs:42:9
Dec 19 05:29:59.865 INFO [stderr]    |
Dec 19 05:29:59.865 INFO [stderr] 42 |     let mut secret = Secret::new(1);
Dec 19 05:29:59.865 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.865 INFO [stderr]    |         |
Dec 19 05:29:59.865 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.865 INFO [stderr] 
Dec 19 05:29:59.866 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.866 INFO [stderr]   --> src/secret_number/tests.rs:49:9
Dec 19 05:29:59.866 INFO [stderr]    |
Dec 19 05:29:59.866 INFO [stderr] 49 |     let mut secret = Secret::new(0);
Dec 19 05:29:59.866 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.866 INFO [stderr]    |         |
Dec 19 05:29:59.866 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.866 INFO [stderr] 
Dec 19 05:29:59.867 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:29:59.867 INFO [stderr]   --> src/secret_number/tests.rs:57:9
Dec 19 05:29:59.867 INFO [stderr]    |
Dec 19 05:29:59.867 INFO [stderr] 57 |     let mut secret = Secret::new(0);
Dec 19 05:29:59.867 INFO [stderr]    |         ----^^^^^^
Dec 19 05:29:59.867 INFO [stderr]    |         |
Dec 19 05:29:59.867 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:29:59.867 INFO [stderr] 
Dec 19 05:29:59.881 INFO [stderr] warning: struct is never constructed: `Secret`
Dec 19 05:29:59.881 INFO [stderr]  --> src/secret_number/mod.rs:7:1
Dec 19 05:29:59.881 INFO [stderr]   |
Dec 19 05:29:59.881 INFO [stderr] 7 | pub struct Secret {
Dec 19 05:29:59.881 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.881 INFO [stderr]   |
Dec 19 05:29:59.882 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: method is never used: `random`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:11:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 11 |     pub fn random() -> Secret {
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: method is never used: `new`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:15:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: method is never used: `guess`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:19:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: method is never used: `secret`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:23:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 23 |     fn secret(&self) -> u16 {
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: variant is never constructed: `TooHigh`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:30:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 30 |     TooHigh(u16),
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: variant is never constructed: `TooLow`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:31:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 31 |     TooLow(u16),
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.882 INFO [stderr] warning: variant is never constructed: `NotANumber`
Dec 19 05:29:59.882 INFO [stderr]   --> src/secret_number/mod.rs:32:5
Dec 19 05:29:59.882 INFO [stderr]    |
Dec 19 05:29:59.882 INFO [stderr] 32 |     NotANumber,
Dec 19 05:29:59.882 INFO [stderr]    |     ^^^^^^^^^^
Dec 19 05:29:59.882 INFO [stderr] 
Dec 19 05:29:59.925 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 19 05:30:00.538 INFO running `"docker" "inspect" "2bd7134083ab6cea96f64a258cc59b282e26a4d8a72e3c99dcf058e15b1428b9"`
Dec 19 05:30:00.754 INFO running `"docker" "rm" "-f" "2bd7134083ab6cea96f64a258cc59b282e26a4d8a72e3c99dcf058e15b1428b9"`
Dec 19 05:30:01.037 INFO [stdout] 2bd7134083ab6cea96f64a258cc59b282e26a4d8a72e3c99dcf058e15b1428b9