Dec 11 21:45:05.113 INFO checking bjackson/iridium against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 21:45:05.113 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 21:45:05.546 INFO [stdout] 752f6f0809bf568c3177e117b3529cf9c9e2802468e0c8768ec04d503acf873b
Dec 11 21:45:05.548 INFO running `"docker" "start" "-a" "752f6f0809bf568c3177e117b3529cf9c9e2802468e0c8768ec04d503acf873b"`
Dec 11 21:45:06.416 INFO [stderr] usermod: no changes
Dec 11 21:45:06.517 INFO [stderr]     Checking num-complex v0.2.0
Dec 11 21:45:06.517 INFO [stderr]    Compiling syn v0.14.7
Dec 11 21:45:06.517 INFO [stderr]     Checking num-bigint v0.2.0
Dec 11 21:45:06.517 INFO [stderr]     Checking num-iter v0.1.37
Dec 11 21:45:09.369 INFO [stderr]     Checking num-rational v0.2.1
Dec 11 21:45:10.324 INFO [stderr]     Checking num v0.2.0
Dec 11 21:45:15.680 INFO [stderr]    Compiling num-derive v0.2.2
Dec 11 21:45:17.800 INFO [stderr]     Checking iridium v0.1.0 (/source)
Dec 11 21:45:19.032 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 21:45:19.032 INFO [stderr]  --> src/main.rs:1:12
Dec 11 21:45:19.032 INFO [stderr]   |
Dec 11 21:45:19.032 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 21:45:19.032 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 21:45:19.032 INFO [stderr]   |
Dec 11 21:45:19.032 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 21:45:19.032 INFO [stderr] 
Dec 11 21:45:19.236 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 21:45:19.236 INFO [stderr]  --> src/main.rs:1:12
Dec 11 21:45:19.236 INFO [stderr]   |
Dec 11 21:45:19.236 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 21:45:19.236 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 21:45:19.236 INFO [stderr]   |
Dec 11 21:45:19.240 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 21:45:19.240 INFO [stderr] 
Dec 11 21:45:19.270 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.84s
Dec 11 21:45:19.276 INFO [stderr] su: No module specific data is present
Dec 11 21:45:20.290 INFO running `"docker" "inspect" "752f6f0809bf568c3177e117b3529cf9c9e2802468e0c8768ec04d503acf873b"`
Dec 11 21:45:20.612 INFO running `"docker" "rm" "-f" "752f6f0809bf568c3177e117b3529cf9c9e2802468e0c8768ec04d503acf873b"`
Dec 11 21:45:20.888 INFO [stdout] 752f6f0809bf568c3177e117b3529cf9c9e2802468e0c8768ec04d503acf873b