Dec 05 10:37:36.630 INFO checking mastodon-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 10:37:36.630 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 10:37:36.838 INFO [stdout] b492e586e2636a5633ac5c910ccf037001405f2a0a360d9660867efba9f4dec4
Dec 05 10:37:36.844 INFO running `"docker" "start" "-a" "b492e586e2636a5633ac5c910ccf037001405f2a0a360d9660867efba9f4dec4"`
Dec 05 10:37:37.413 INFO [stderr] usermod: no changes
Dec 05 10:37:37.570 INFO [stderr]    Compiling syn v0.10.8
Dec 05 10:37:41.343 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Dec 05 10:37:42.633 INFO [stderr]    Compiling serde_codegen v0.8.23
Dec 05 10:37:46.115 INFO [stderr]    Compiling serde_derive v0.8.23
Dec 05 10:37:47.276 INFO [stderr]     Checking mastodon v0.1.0 (/source)
Dec 05 10:37:50.071 INFO [stderr] warning: unused imports: `Read`, `self`
Dec 05 10:37:50.071 INFO [stderr]   --> src/lib.rs:25:19
Dec 05 10:37:50.071 INFO [stderr]    |
Dec 05 10:37:50.071 INFO [stderr] 25 |     use std::io::{self, Read};
Dec 05 10:37:50.071 INFO [stderr]    |                   ^^^^  ^^^^
Dec 05 10:37:50.087 INFO [stderr]    |
Dec 05 10:37:50.087 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 05 10:37:50.087 INFO [stderr] 
Dec 05 10:37:50.583 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 05 10:37:50.583 INFO [stderr]  --> src/lib.rs:1:12
Dec 05 10:37:50.583 INFO [stderr]   |
Dec 05 10:37:50.583 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 05 10:37:50.583 INFO [stderr]   |            ^^^^^^^^^^
Dec 05 10:37:50.583 INFO [stderr]   |
Dec 05 10:37:50.583 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 05 10:37:50.583 INFO [stderr] 
Dec 05 10:37:50.763 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 05 10:37:50.763 INFO [stderr]  --> src/lib.rs:1:12
Dec 05 10:37:50.763 INFO [stderr]   |
Dec 05 10:37:50.763 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 05 10:37:50.763 INFO [stderr]   |            ^^^^^^^^^^
Dec 05 10:37:50.763 INFO [stderr]   |
Dec 05 10:37:50.763 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 05 10:37:50.763 INFO [stderr] 
Dec 05 10:37:50.831 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.40s
Dec 05 10:37:50.859 INFO [stderr] su: No module specific data is present
Dec 05 10:37:51.743 INFO running `"docker" "inspect" "b492e586e2636a5633ac5c910ccf037001405f2a0a360d9660867efba9f4dec4"`
Dec 05 10:37:52.075 INFO running `"docker" "rm" "-f" "b492e586e2636a5633ac5c910ccf037001405f2a0a360d9660867efba9f4dec4"`
Dec 05 10:37:52.415 INFO [stdout] b492e586e2636a5633ac5c910ccf037001405f2a0a360d9660867efba9f4dec4