Dec 17 18:57:20.768 INFO checking nathankleyn/jsonvalid against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 18:57:20.769 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/nathankleyn/jsonvalid:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:57:21.100 INFO [stdout] 8edab55fde47a673044d9577f04156d8c256667ef9c4a4fcec3b5475b0d14ccf
Dec 17 18:57:21.102 INFO running `"docker" "start" "-a" "8edab55fde47a673044d9577f04156d8c256667ef9c4a4fcec3b5475b0d14ccf"`
Dec 17 18:57:21.884 INFO [stderr]    Compiling num-traits v0.2.0
Dec 17 18:57:21.884 INFO [stderr]    Compiling rustc-demangle v0.1.6
Dec 17 18:57:21.884 INFO [stderr]    Compiling serde v1.0.27
Dec 17 18:57:21.936 INFO [stderr]    Compiling rand v0.4.2
Dec 17 18:57:21.936 INFO [stderr]    Compiling backtrace-sys v0.1.16
Dec 17 18:57:21.936 INFO [stderr]     Checking jsonvalid v0.1.1 (/opt/crater/workdir)
Dec 17 18:57:21.936 INFO [stderr]    Compiling remove_dir_all v0.3.0
Dec 17 18:57:22.416 INFO [stderr]     Checking backtrace v0.3.5
Dec 17 18:57:23.276 INFO [stderr]     Checking error-chain v0.11.0
Dec 17 18:57:24.982 INFO [stderr]    Compiling num-traits v0.1.43
Dec 17 18:57:26.057 INFO [stderr]    Compiling tempdir v0.3.6
Dec 17 18:57:32.939 INFO [stderr]    Compiling serde_json v1.0.9
Dec 17 18:57:32.940 INFO [stderr]    Compiling semver v0.8.0
Dec 17 18:57:37.522 INFO [stderr]    Compiling cargo_metadata v0.3.3
Dec 17 18:57:40.889 INFO [stderr]    Compiling skeptic v0.13.2
Dec 17 18:57:45.070 INFO [stderr]    Compiling assert_cli v0.5.4
Dec 17 18:57:48.033 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.29s
Dec 17 18:57:49.142 INFO running `"docker" "inspect" "8edab55fde47a673044d9577f04156d8c256667ef9c4a4fcec3b5475b0d14ccf"`
Dec 17 18:57:49.454 INFO running `"docker" "rm" "-f" "8edab55fde47a673044d9577f04156d8c256667ef9c4a4fcec3b5475b0d14ccf"`
Dec 17 18:57:49.788 INFO [stdout] 8edab55fde47a673044d9577f04156d8c256667ef9c4a4fcec3b5475b0d14ccf