Dec 18 14:54:51.517 INFO checking ioc-0.6.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 14:54:51.517 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/ioc/0.6.2:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:54:51.690 INFO [stdout] 29d39736de137e56d1ddefd3c5bff03440090e393d0900e26541ec7eb5198452
Dec 18 14:54:51.693 INFO running `"docker" "start" "-a" "29d39736de137e56d1ddefd3c5bff03440090e393d0900e26541ec7eb5198452"`
Dec 18 14:54:52.252 INFO [stderr]     Checking downcast v0.6.0
Dec 18 14:54:52.552 INFO [stderr]     Checking ioc v0.6.2 (/opt/crater/workdir)
Dec 18 14:54:52.880 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 14:54:52.880 INFO [stderr]  --> src/lib.rs:1:1
Dec 18 14:54:52.880 INFO [stderr]   |
Dec 18 14:54:52.880 INFO [stderr] 1 | #[macro_use] 
Dec 18 14:54:52.880 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 14:54:52.880 INFO [stderr]   |
Dec 18 14:54:52.880 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:54:52.880 INFO [stderr] 
Dec 18 14:54:52.886 INFO [stderr] warning: unused import: `TryLockError`
Dec 18 14:54:52.886 INFO [stderr]  --> src/container.rs:9:17
Dec 18 14:54:52.886 INFO [stderr]   |
Dec 18 14:54:52.886 INFO [stderr] 9 | use std::sync::{TryLockError, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard};
Dec 18 14:54:52.886 INFO [stderr]   |                 ^^^^^^^^^^^^
Dec 18 14:54:52.886 INFO [stderr] 
Dec 18 14:54:52.944 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 14:54:52.944 INFO [stderr]  --> src/lib.rs:1:1
Dec 18 14:54:52.944 INFO [stderr]   |
Dec 18 14:54:52.944 INFO [stderr] 1 | #[macro_use] 
Dec 18 14:54:52.944 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 14:54:52.944 INFO [stderr]   |
Dec 18 14:54:52.944 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:54:52.944 INFO [stderr] 
Dec 18 14:54:52.952 INFO [stderr] warning: unused import: `TryLockError`
Dec 18 14:54:52.952 INFO [stderr]  --> src/container.rs:9:17
Dec 18 14:54:52.952 INFO [stderr]   |
Dec 18 14:54:52.952 INFO [stderr] 9 | use std::sync::{TryLockError, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard};
Dec 18 14:54:52.952 INFO [stderr]   |                 ^^^^^^^^^^^^
Dec 18 14:54:52.952 INFO [stderr] 
Dec 18 14:54:57.008 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 18 14:54:57.008 INFO [stderr]   --> src/container.rs:18:33
Dec 18 14:54:57.008 INFO [stderr]    |
Dec 18 14:54:57.008 INFO [stderr] 18 | pub type ReadGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockReadGuard<'a, Box<Base>>>;
Dec 18 14:54:57.008 INFO [stderr]    |                                 ^^^^^^
Dec 18 14:54:57.008 INFO [stderr]    |
Dec 18 14:54:57.008 INFO [stderr]    = note: #[warn(type_alias_bounds)] on by default
Dec 18 14:54:57.008 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 18 14:54:57.008 INFO [stderr] 
Dec 18 14:54:57.008 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 18 14:54:57.008 INFO [stderr]   --> src/container.rs:19:34
Dec 18 14:54:57.008 INFO [stderr]    |
Dec 18 14:54:57.008 INFO [stderr] 19 | pub type WriteGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockWriteGuard<'a, Box<Base>>>;
Dec 18 14:54:57.008 INFO [stderr]    |                                  ^^^^^^
Dec 18 14:54:57.008 INFO [stderr]    |
Dec 18 14:54:57.008 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 18 14:54:57.008 INFO [stderr] 
Dec 18 14:54:57.067 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 18 14:54:57.067 INFO [stderr]   --> src/container.rs:18:33
Dec 18 14:54:57.067 INFO [stderr]    |
Dec 18 14:54:57.067 INFO [stderr] 18 | pub type ReadGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockReadGuard<'a, Box<Base>>>;
Dec 18 14:54:57.067 INFO [stderr]    |                                 ^^^^^^
Dec 18 14:54:57.068 INFO [stderr]    |
Dec 18 14:54:57.068 INFO [stderr]    = note: #[warn(type_alias_bounds)] on by default
Dec 18 14:54:57.068 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 18 14:54:57.068 INFO [stderr] 
Dec 18 14:54:57.068 INFO [stderr] warning: bounds on generic parameters are not enforced in type aliases
Dec 18 14:54:57.068 INFO [stderr]   --> src/container.rs:19:34
Dec 18 14:54:57.068 INFO [stderr]    |
Dec 18 14:54:57.068 INFO [stderr] 19 | pub type WriteGuard<'a, T, Base: ?Sized> = downcast::Guard<T, RwLockWriteGuard<'a, Box<Base>>>;
Dec 18 14:54:57.068 INFO [stderr]    |                                  ^^^^^^
Dec 18 14:54:57.068 INFO [stderr]    |
Dec 18 14:54:57.068 INFO [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
Dec 18 14:54:57.068 INFO [stderr] 
Dec 18 14:54:57.142 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
Dec 18 14:54:57.503 INFO running `"docker" "inspect" "29d39736de137e56d1ddefd3c5bff03440090e393d0900e26541ec7eb5198452"`
Dec 18 14:54:57.597 INFO running `"docker" "rm" "-f" "29d39736de137e56d1ddefd3c5bff03440090e393d0900e26541ec7eb5198452"`
Dec 18 14:54:57.696 INFO [stdout] 29d39736de137e56d1ddefd3c5bff03440090e393d0900e26541ec7eb5198452