[INFO] fetching crate rocket_prometheus 0.2.0...
[INFO] extracting crate rocket_prometheus 0.2.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/rocket_prometheus/0.2.0
[INFO] extracting crate rocket_prometheus 0.2.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/rocket_prometheus/0.2.0
[INFO] validating manifest of rocket_prometheus-0.2.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rocket_prometheus-0.2.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rocket_prometheus-0.2.0
[INFO] finished frobbing rocket_prometheus-0.2.0
[INFO] frobbed toml for rocket_prometheus-0.2.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/rocket_prometheus/0.2.0/Cargo.toml
[INFO] started frobbing rocket_prometheus-0.2.0
[INFO] finished frobbing rocket_prometheus-0.2.0
[INFO] frobbed toml for rocket_prometheus-0.2.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/rocket_prometheus/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rocket_prometheus-0.2.0 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/rocket_prometheus/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 02cf2fbfd881b525951659b9e6716de56bfa2a44a54e0b317d028ea3e611933a
[INFO] running `"docker" "start" "-a" "02cf2fbfd881b525951659b9e6716de56bfa2a44a54e0b317d028ea3e611933a"`
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling protobuf v2.7.0
[INFO] [stderr]    Compiling prometheus v0.6.1
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]     Checking cookie v0.11.1
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]    Compiling pear_codegen v0.1.2
[INFO] [stderr]    Compiling rocket_codegen v0.4.2
[INFO] [stderr]    Compiling rocket v0.4.2
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling devise_core v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling devise_codegen v0.2.0
[INFO] [stderr]    Compiling pear v0.1.2
[INFO] [stderr]     Checking rocket_http v0.4.2
[INFO] [stderr]    Compiling devise v0.2.0
[INFO] [stderr]     Checking serde v1.0.94
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking rocket_prometheus v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking rocket_contrib v0.4.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.28s
[INFO] running `"docker" "inspect" "02cf2fbfd881b525951659b9e6716de56bfa2a44a54e0b317d028ea3e611933a"`
[INFO] running `"docker" "rm" "-f" "02cf2fbfd881b525951659b9e6716de56bfa2a44a54e0b317d028ea3e611933a"`
[INFO] [stdout] 02cf2fbfd881b525951659b9e6716de56bfa2a44a54e0b317d028ea3e611933a