Dec 12 17:19:04.753 INFO checking cache-macro-0.4.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 17:19:04.753 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 17:19:05.261 INFO [stdout] 43f53f1af8f7a9dba35bbbe8452e476e2336208cd06914c370e7dca294691cdb
Dec 12 17:19:05.263 INFO running `"docker" "start" "-a" "43f53f1af8f7a9dba35bbbe8452e476e2336208cd06914c370e7dca294691cdb"`
Dec 12 17:19:06.550 INFO [stderr] usermod: no changes
Dec 12 17:19:06.676 INFO [stderr]     Checking expiring_map v0.1.0
Dec 12 17:19:06.700 INFO [stderr]    Compiling syn v0.15.22
Dec 12 17:19:17.212 INFO [stderr]     Checking cache-macro v0.4.1 (/source)
Dec 12 17:19:19.192 INFO [stderr] warning: unused import: `proc_macro2`
Dec 12 17:19:19.193 INFO [stderr]  --> src/config.rs:4:5
Dec 12 17:19:19.193 INFO [stderr]   |
Dec 12 17:19:19.193 INFO [stderr] 4 | use proc_macro2;
Dec 12 17:19:19.193 INFO [stderr]   |     ^^^^^^^^^^^
Dec 12 17:19:19.194 INFO [stderr]   |
Dec 12 17:19:19.194 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 17:19:19.194 INFO [stderr] 
Dec 12 17:19:19.804 INFO [stderr] warning: the feature `extern_crate_item_prelude` has been stable since 1.31.0 and no longer requires an attribute to enable
Dec 12 17:19:19.804 INFO [stderr]    --> src/lib.rs:170:12
Dec 12 17:19:19.804 INFO [stderr]     |
Dec 12 17:19:19.804 INFO [stderr] 170 | #![feature(extern_crate_item_prelude)]
Dec 12 17:19:19.804 INFO [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:19:19.804 INFO [stderr]     |
Dec 12 17:19:19.804 INFO [stderr]     = note: #[warn(stable_features)] on by default
Dec 12 17:19:19.804 INFO [stderr] 
Dec 12 17:19:19.848 INFO [stderr] warning: unused import: `proc_macro2`
Dec 12 17:19:19.848 INFO [stderr]  --> src/config.rs:4:5
Dec 12 17:19:19.848 INFO [stderr]   |
Dec 12 17:19:19.848 INFO [stderr] 4 | use proc_macro2;
Dec 12 17:19:19.848 INFO [stderr]   |     ^^^^^^^^^^^
Dec 12 17:19:19.848 INFO [stderr]   |
Dec 12 17:19:19.848 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 17:19:19.848 INFO [stderr] 
Dec 12 17:19:20.136 INFO [stderr] warning: the feature `extern_crate_item_prelude` has been stable since 1.31.0 and no longer requires an attribute to enable
Dec 12 17:19:20.136 INFO [stderr]    --> src/lib.rs:170:12
Dec 12 17:19:20.136 INFO [stderr]     |
Dec 12 17:19:20.136 INFO [stderr] 170 | #![feature(extern_crate_item_prelude)]
Dec 12 17:19:20.136 INFO [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:19:20.136 INFO [stderr]     |
Dec 12 17:19:20.136 INFO [stderr]     = note: #[warn(stable_features)] on by default
Dec 12 17:19:20.136 INFO [stderr] 
Dec 12 17:19:28.324 INFO [stderr] warning: unused import: `proc_macro2`
Dec 12 17:19:28.324 INFO [stderr]  --> src/config.rs:4:5
Dec 12 17:19:28.324 INFO [stderr]   |
Dec 12 17:19:28.324 INFO [stderr] 4 | use proc_macro2;
Dec 12 17:19:28.324 INFO [stderr]   |     ^^^^^^^^^^^
Dec 12 17:19:28.324 INFO [stderr]   |
Dec 12 17:19:28.324 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 17:19:28.324 INFO [stderr] 
Dec 12 17:19:28.496 INFO [stderr] warning: the feature `extern_crate_item_prelude` has been stable since 1.31.0 and no longer requires an attribute to enable
Dec 12 17:19:28.496 INFO [stderr]    --> src/lib.rs:170:12
Dec 12 17:19:28.496 INFO [stderr]     |
Dec 12 17:19:28.496 INFO [stderr] 170 | #![feature(extern_crate_item_prelude)]
Dec 12 17:19:28.496 INFO [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:19:28.496 INFO [stderr]     |
Dec 12 17:19:28.496 INFO [stderr]     = note: #[warn(stable_features)] on by default
Dec 12 17:19:28.496 INFO [stderr] 
Dec 12 17:19:33.196 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.60s
Dec 12 17:19:33.204 INFO [stderr] su: No module specific data is present
Dec 12 17:19:33.746 INFO running `"docker" "inspect" "43f53f1af8f7a9dba35bbbe8452e476e2336208cd06914c370e7dca294691cdb"`
Dec 12 17:19:33.970 INFO running `"docker" "rm" "-f" "43f53f1af8f7a9dba35bbbe8452e476e2336208cd06914c370e7dca294691cdb"`
Dec 12 17:19:34.128 INFO [stdout] 43f53f1af8f7a9dba35bbbe8452e476e2336208cd06914c370e7dca294691cdb