Dec 12 08:00:45.757 INFO checking safety-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 08:00:45.757 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 08:00:46.252 INFO [stdout] 194d42f11c05db42cd54d9f742ff1956ad1556686335c2aee7cdc8dd60a019f2
Dec 12 08:00:46.255 INFO running `"docker" "start" "-a" "194d42f11c05db42cd54d9f742ff1956ad1556686335c2aee7cdc8dd60a019f2"`
Dec 12 08:00:48.267 INFO [stderr] usermod: no changes
Dec 12 08:00:48.565 INFO [stderr]     Checking syntex_pos v0.52.0
Dec 12 08:00:48.580 INFO [stderr]    Compiling serde_codegen v0.8.23
Dec 12 08:00:50.174 INFO [stderr]     Checking syntex_errors v0.52.0
Dec 12 08:00:52.027 INFO [stderr]     Checking syntex_syntax v0.52.0
Dec 12 08:00:54.724 INFO [stderr]    Compiling serde_derive v0.8.23
Dec 12 08:01:09.006 INFO [stderr]     Checking syntex v0.52.0
Dec 12 08:01:10.336 INFO [stderr]     Checking safety v0.1.0 (/source)
Dec 12 08:01:13.628 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 08:01:13.628 INFO [stderr]  --> src/lib.rs:1:12
Dec 12 08:01:13.628 INFO [stderr]   |
Dec 12 08:01:13.628 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 12 08:01:13.628 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 08:01:13.628 INFO [stderr]   |
Dec 12 08:01:13.628 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 08:01:13.628 INFO [stderr] 
Dec 12 08:01:13.964 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 08:01:13.964 INFO [stderr]  --> src/lib.rs:1:12
Dec 12 08:01:13.964 INFO [stderr]   |
Dec 12 08:01:13.964 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 12 08:01:13.964 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 08:01:13.964 INFO [stderr]   |
Dec 12 08:01:13.964 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 08:01:13.964 INFO [stderr] 
Dec 12 08:01:18.010 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 08:01:18.010 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 08:01:18.010 INFO [stderr]  --> src/main.rs:1:12
Dec 12 08:01:18.010 INFO [stderr]   |
Dec 12 08:01:18.010 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 12 08:01:18.010 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 08:01:18.010 INFO [stderr]   |
Dec 12 08:01:18.010 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 08:01:18.010 INFO [stderr] 
Dec 12 08:01:18.010 INFO [stderr]  --> src/main.rs:1:12
Dec 12 08:01:18.010 INFO [stderr]   |
Dec 12 08:01:18.010 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 12 08:01:18.010 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 08:01:18.010 INFO [stderr]   |
Dec 12 08:01:18.010 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 08:01:18.010 INFO [stderr] 
Dec 12 08:01:18.072 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.77s
Dec 12 08:01:18.081 INFO [stderr] su: No module specific data is present
Dec 12 08:01:18.950 INFO running `"docker" "inspect" "194d42f11c05db42cd54d9f742ff1956ad1556686335c2aee7cdc8dd60a019f2"`
Dec 12 08:01:19.250 INFO running `"docker" "rm" "-f" "194d42f11c05db42cd54d9f742ff1956ad1556686335c2aee7cdc8dd60a019f2"`
Dec 12 08:01:19.708 INFO [stdout] 194d42f11c05db42cd54d9f742ff1956ad1556686335c2aee7cdc8dd60a019f2