Dec 12 12:47:38.062 INFO checking ioc-0.6.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:47:38.062 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 12 12:47:38.296 INFO [stdout] 243b631f61b0cbd7358073ba028f583b58b94e33377be07bfcfa1e2dec230ef1
Dec 12 12:47:38.299 INFO running `"docker" "start" "-a" "243b631f61b0cbd7358073ba028f583b58b94e33377be07bfcfa1e2dec230ef1"`
Dec 12 12:47:38.796 INFO [stderr] usermod: no changes
Dec 12 12:47:38.838 INFO [stderr]     Checking downcast v0.6.0
Dec 12 12:47:39.494 INFO [stderr]     Checking ioc v0.6.2 (/source)
Dec 12 12:47:40.108 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 12:47:40.108 INFO [stderr]  --> src/lib.rs:1:1
Dec 12 12:47:40.108 INFO [stderr]   |
Dec 12 12:47:40.108 INFO [stderr] 1 | #[macro_use] 
Dec 12 12:47:40.108 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 12:47:40.108 INFO [stderr]   |
Dec 12 12:47:40.108 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 12:47:40.108 INFO [stderr] 
Dec 12 12:47:40.113 INFO [stderr] warning: unused import: `TryLockError`
Dec 12 12:47:40.113 INFO [stderr]  --> src/container.rs:9:17
Dec 12 12:47:40.113 INFO [stderr]   |
Dec 12 12:47:40.113 INFO [stderr] 9 | use std::sync::{TryLockError, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard};
Dec 12 12:47:40.113 INFO [stderr]   |                 ^^^^^^^^^^^^
Dec 12 12:47:40.113 INFO [stderr] 
Dec 12 12:47:40.283 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 12:47:40.283 INFO [stderr]  --> src/lib.rs:1:1
Dec 12 12:47:40.283 INFO [stderr]   |
Dec 12 12:47:40.283 INFO [stderr] 1 | #[macro_use] 
Dec 12 12:47:40.283 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 12:47:40.283 INFO [stderr]   |
Dec 12 12:47:40.283 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 12:47:40.283 INFO [stderr] 
Dec 12 12:47:40.283 INFO [stderr] warning: unused import: `TryLockError`
Dec 12 12:47:40.283 INFO [stderr]  --> src/container.rs:9:17
Dec 12 12:47:40.283 INFO [stderr]   |
Dec 12 12:47:40.283 INFO [stderr] 9 | use std::sync::{TryLockError, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard};
Dec 12 12:47:40.283 INFO [stderr]   |                 ^^^^^^^^^^^^
Dec 12 12:47:40.283 INFO [stderr] 
Dec 12 12:47:44.460 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 12 12:47:44.462 INFO [stderr]   --> src/container.rs:18:33
Dec 12 12:47:44.462 INFO [stderr]    |
Dec 12 12:47:44.462 INFO [stderr] 18 | pub type ReadGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockReadGuard<'a, Box<Base>>>;
Dec 12 12:47:44.462 INFO [stderr]    |                                 ^^^^^^
Dec 12 12:47:44.462 INFO [stderr]    |
Dec 12 12:47:44.462 INFO [stderr]    = note: #[warn(type_alias_bounds)] on by default
Dec 12 12:47:44.462 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 12 12:47:44.462 INFO [stderr] 
Dec 12 12:47:44.462 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 12 12:47:44.462 INFO [stderr]   --> src/container.rs:19:34
Dec 12 12:47:44.462 INFO [stderr]    |
Dec 12 12:47:44.462 INFO [stderr] 19 | pub type WriteGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockWriteGuard<'a, Box<Base>>>;
Dec 12 12:47:44.462 INFO [stderr]    |                                  ^^^^^^
Dec 12 12:47:44.462 INFO [stderr]    |
Dec 12 12:47:44.462 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 12 12:47:44.462 INFO [stderr] 
Dec 12 12:47:44.615 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 12 12:47:44.615 INFO [stderr]   --> src/container.rs:18:33
Dec 12 12:47:44.615 INFO [stderr]    |
Dec 12 12:47:44.615 INFO [stderr] 18 | pub type ReadGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockReadGuard<'a, Box<Base>>>;
Dec 12 12:47:44.615 INFO [stderr]    |                                 ^^^^^^
Dec 12 12:47:44.615 INFO [stderr]    |
Dec 12 12:47:44.615 INFO [stderr]    = note: #[warn(type_alias_bounds)] on by default
Dec 12 12:47:44.615 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 12 12:47:44.615 INFO [stderr] 
Dec 12 12:47:44.615 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 12 12:47:44.615 INFO [stderr]   --> src/container.rs:19:34
Dec 12 12:47:44.615 INFO [stderr]    |
Dec 12 12:47:44.615 INFO [stderr] 19 | pub type WriteGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockWriteGuard<'a, Box<Base>>>;
Dec 12 12:47:44.615 INFO [stderr]    |                                  ^^^^^^
Dec 12 12:47:44.615 INFO [stderr]    |
Dec 12 12:47:44.615 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 12 12:47:44.616 INFO [stderr] 
Dec 12 12:47:44.652 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.83s
Dec 12 12:47:44.652 INFO [stderr] su: No module specific data is present
Dec 12 12:47:44.943 INFO running `"docker" "inspect" "243b631f61b0cbd7358073ba028f583b58b94e33377be07bfcfa1e2dec230ef1"`
Dec 12 12:47:45.092 INFO running `"docker" "rm" "-f" "243b631f61b0cbd7358073ba028f583b58b94e33377be07bfcfa1e2dec230ef1"`
Dec 12 12:47:45.328 INFO [stdout] 243b631f61b0cbd7358073ba028f583b58b94e33377be07bfcfa1e2dec230ef1