Oct 13 16:10:30.369 INFO checking derive_builder-0.6.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 16:10:30.370 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 16:10:30.902 INFO blam! 52d8519787d55355bc9d6e589e2427be9106a78b1341838c2eeba107a3b99f5e
Oct 13 16:10:30.904 INFO running `"docker" "start" "-a" "52d8519787d55355bc9d6e589e2427be9106a78b1341838c2eeba107a3b99f5e"`
Oct 13 16:10:32.268 INFO kablam! usermod: no changes
Oct 13 16:10:32.465 INFO kablam!    Compiling derive_builder v0.6.0 (/source)
Oct 13 16:10:32.473 INFO kablam!     Checking difference v1.0.0
Oct 13 16:10:32.477 INFO kablam!    Compiling syn v0.13.11
Oct 13 16:10:32.492 INFO kablam!     Checking darling_core v0.6.3
Oct 13 16:10:33.624 INFO kablam!     Checking pretty_assertions v0.2.1
Oct 13 16:11:08.392 INFO kablam!    Compiling darling_macro v0.6.3
Oct 13 16:11:14.300 INFO kablam!    Compiling darling v0.6.3
Oct 13 16:11:20.842 INFO kablam!     Checking derive_builder_core v0.3.0
Oct 13 16:11:55.941 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
Oct 13 16:11:55.955 INFO kablam! su: No module specific data is present
Oct 13 16:11:56.381 INFO running `"docker" "rm" "-f" "52d8519787d55355bc9d6e589e2427be9106a78b1341838c2eeba107a3b99f5e"`
Oct 13 16:11:56.480 INFO blam! 52d8519787d55355bc9d6e589e2427be9106a78b1341838c2eeba107a3b99f5e