Nov 30 04:32:24.965 INFO checking data-pup/cargo-metadata-exercise against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 04:32:24.965 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 04:32:25.357 INFO [stdout] f94a63deb9acf6237484517d862aa5c144ae87632aa4f49a6df54c0fa233804c
Nov 30 04:32:25.359 INFO running `"docker" "start" "-a" "f94a63deb9acf6237484517d862aa5c144ae87632aa4f49a6df54c0fa233804c"`
Nov 30 04:32:26.636 INFO [stderr] usermod: no changes
Nov 30 04:32:26.832 INFO [stderr]     Checking semver v0.9.0
Nov 30 04:32:26.832 INFO [stderr]    Compiling syn v0.14.9
Nov 30 04:32:26.832 INFO [stderr]     Checking error-chain v0.12.0
Nov 30 04:32:38.381 INFO [stderr]    Compiling serde_derive v1.0.76
Nov 30 04:32:52.709 INFO [stderr]     Checking cargo_metadata v0.6.0
Nov 30 04:32:54.092 INFO [stderr]     Checking cargo-metadata-ex v0.1.0 (/source)
Nov 30 04:32:55.516 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.84s
Nov 30 04:32:55.527 INFO [stderr] su: No module specific data is present
Nov 30 04:32:56.125 INFO running `"docker" "inspect" "f94a63deb9acf6237484517d862aa5c144ae87632aa4f49a6df54c0fa233804c"`
Nov 30 04:32:56.374 INFO running `"docker" "rm" "-f" "f94a63deb9acf6237484517d862aa5c144ae87632aa4f49a6df54c0fa233804c"`
Nov 30 04:32:56.527 INFO [stdout] f94a63deb9acf6237484517d862aa5c144ae87632aa4f49a6df54c0fa233804c