Dec 11 06:07:09.577 INFO checking withoutboats/guessing_game against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:07:09.578 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 06:07:10.020 INFO [stdout] dc77a3341b02896eaedbb99a32a2fffee049a8422b380be27a85b494c9de0dfb
Dec 11 06:07:10.024 INFO running `"docker" "start" "-a" "dc77a3341b02896eaedbb99a32a2fffee049a8422b380be27a85b494c9de0dfb"`
Dec 11 06:07:11.100 INFO [stderr] usermod: no changes
Dec 11 06:07:11.164 INFO [stderr]     Checking guessing_game v0.1.0 (/source)
Dec 11 06:07:11.404 INFO [stderr] warning: unused variable: `secret`
Dec 11 06:07:11.404 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 11 06:07:11.404 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 11 06:07:11.405 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: unused variable: `guess`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 11 06:07:11.405 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: unused variable: `f`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 11 06:07:11.405 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: struct is never constructed: `Secret`
Dec 11 06:07:11.405 INFO [stderr]  --> src/secret_number/mod.rs:7:1
Dec 11 06:07:11.405 INFO [stderr]   |
Dec 11 06:07:11.405 INFO [stderr] 7 | pub struct Secret {
Dec 11 06:07:11.405 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr]   |
Dec 11 06:07:11.405 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: method is never used: `random`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:11:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 11 |     pub fn random() -> Secret {
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: method is never used: `new`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:15:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: method is never used: `guess`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:19:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: method is never used: `secret`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:23:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 23 |     fn secret(&self) -> u16 {
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: variant is never constructed: `TooHigh`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:30:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 30 |     TooHigh(u16),
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: variant is never constructed: `TooLow`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:31:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 31 |     TooLow(u16),
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.405 INFO [stderr] warning: variant is never constructed: `NotANumber`
Dec 11 06:07:11.405 INFO [stderr]   --> src/secret_number/mod.rs:32:5
Dec 11 06:07:11.405 INFO [stderr]    |
Dec 11 06:07:11.405 INFO [stderr] 32 |     NotANumber,
Dec 11 06:07:11.405 INFO [stderr]    |     ^^^^^^^^^^
Dec 11 06:07:11.405 INFO [stderr] 
Dec 11 06:07:11.488 INFO [stderr] warning: unused variable: `secret`
Dec 11 06:07:11.504 INFO [stderr]   --> src/secret_number/mod.rs:15:12
Dec 11 06:07:11.504 INFO [stderr]    |
Dec 11 06:07:11.504 INFO [stderr] 15 |     fn new(secret: u16) -> Secret {
Dec 11 06:07:11.504 INFO [stderr]    |            ^^^^^^ help: consider using `_secret` instead
Dec 11 06:07:11.504 INFO [stderr]    |
Dec 11 06:07:11.504 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 06:07:11.504 INFO [stderr] 
Dec 11 06:07:11.504 INFO [stderr] warning: unused variable: `guess`
Dec 11 06:07:11.504 INFO [stderr]   --> src/secret_number/mod.rs:19:25
Dec 11 06:07:11.504 INFO [stderr]    |
Dec 11 06:07:11.504 INFO [stderr] 19 |     pub fn guess(&self, guess: &str) -> Result<u32, GuessError> {
Dec 11 06:07:11.504 INFO [stderr]    |                         ^^^^^ help: consider using `_guess` instead
Dec 11 06:07:11.504 INFO [stderr] 
Dec 11 06:07:11.504 INFO [stderr] warning: unused variable: `f`
Dec 11 06:07:11.504 INFO [stderr]   --> src/secret_number/mod.rs:36:19
Dec 11 06:07:11.504 INFO [stderr]    |
Dec 11 06:07:11.504 INFO [stderr] 36 |     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
Dec 11 06:07:11.504 INFO [stderr]    |                   ^ help: consider using `_f` instead
Dec 11 06:07:11.504 INFO [stderr] 
Dec 11 06:07:11.508 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.508 INFO [stderr]   --> src/secret_number/tests.rs:18:9
Dec 11 06:07:11.508 INFO [stderr]    |
Dec 11 06:07:11.508 INFO [stderr] 18 |     let mut secret = Secret::new(0);
Dec 11 06:07:11.508 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.508 INFO [stderr]    |         |
Dec 11 06:07:11.508 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.508 INFO [stderr]    |
Dec 11 06:07:11.508 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 06:07:11.508 INFO [stderr] 
Dec 11 06:07:11.516 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.516 INFO [stderr]   --> src/secret_number/tests.rs:24:9
Dec 11 06:07:11.516 INFO [stderr]    |
Dec 11 06:07:11.516 INFO [stderr] 24 |     let mut secret = Secret::new(0);
Dec 11 06:07:11.516 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.516 INFO [stderr]    |         |
Dec 11 06:07:11.516 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.516 INFO [stderr] 
Dec 11 06:07:11.516 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.516 INFO [stderr]   --> src/secret_number/tests.rs:30:9
Dec 11 06:07:11.516 INFO [stderr]    |
Dec 11 06:07:11.516 INFO [stderr] 30 |     let mut secret = Secret::new(1);
Dec 11 06:07:11.516 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.516 INFO [stderr]    |         |
Dec 11 06:07:11.516 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.516 INFO [stderr] 
Dec 11 06:07:11.516 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.516 INFO [stderr]   --> src/secret_number/tests.rs:36:9
Dec 11 06:07:11.516 INFO [stderr]    |
Dec 11 06:07:11.516 INFO [stderr] 36 |     let mut secret = Secret::new(0);
Dec 11 06:07:11.516 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.516 INFO [stderr]    |         |
Dec 11 06:07:11.516 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.516 INFO [stderr] 
Dec 11 06:07:11.516 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.516 INFO [stderr]   --> src/secret_number/tests.rs:42:9
Dec 11 06:07:11.516 INFO [stderr]    |
Dec 11 06:07:11.517 INFO [stderr] 42 |     let mut secret = Secret::new(1);
Dec 11 06:07:11.517 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.517 INFO [stderr]    |         |
Dec 11 06:07:11.517 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.517 INFO [stderr] 
Dec 11 06:07:11.517 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.517 INFO [stderr]   --> src/secret_number/tests.rs:49:9
Dec 11 06:07:11.517 INFO [stderr]    |
Dec 11 06:07:11.517 INFO [stderr] 49 |     let mut secret = Secret::new(0);
Dec 11 06:07:11.517 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.517 INFO [stderr]    |         |
Dec 11 06:07:11.517 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.517 INFO [stderr] 
Dec 11 06:07:11.532 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:07:11.532 INFO [stderr]   --> src/secret_number/tests.rs:57:9
Dec 11 06:07:11.532 INFO [stderr]    |
Dec 11 06:07:11.532 INFO [stderr] 57 |     let mut secret = Secret::new(0);
Dec 11 06:07:11.532 INFO [stderr]    |         ----^^^^^^
Dec 11 06:07:11.532 INFO [stderr]    |         |
Dec 11 06:07:11.532 INFO [stderr]    |         help: remove this `mut`
Dec 11 06:07:11.532 INFO [stderr] 
Dec 11 06:07:11.558 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 11 06:07:11.560 INFO [stderr] su: No module specific data is present
Dec 11 06:07:12.240 INFO running `"docker" "inspect" "dc77a3341b02896eaedbb99a32a2fffee049a8422b380be27a85b494c9de0dfb"`
Dec 11 06:07:12.572 INFO running `"docker" "rm" "-f" "dc77a3341b02896eaedbb99a32a2fffee049a8422b380be27a85b494c9de0dfb"`
Dec 11 06:07:12.884 INFO [stdout] dc77a3341b02896eaedbb99a32a2fffee049a8422b380be27a85b494c9de0dfb