[INFO] crate ocf 0.2.0-alpha.6 is already in cache
[INFO] checking ocf-0.2.0-alpha.6 against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] extracting crate ocf 0.2.0-alpha.6 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate ocf 0.2.0-alpha.6 on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ocf 0.2.0-alpha.6
[INFO] finished tweaking crates.io crate ocf 0.2.0-alpha.6
[INFO] tweaked toml for crates.io crate ocf 0.2.0-alpha.6 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4f9dae43cb4c8f2e2c2b5bd8939eca96e3559194d650166911197dca44de312d
[INFO] running `"docker" "start" "-a" "4f9dae43cb4c8f2e2c2b5bd8939eca96e3559194d650166911197dca44de312d"`
[INFO] [stderr]    Compiling ocf v0.2.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking semver v0.2.3
[INFO] [stderr]     Checking ordered-float v0.0.2
[INFO] [stderr]     Checking serde-value v0.1.0
[INFO] [stderr] error: cannot find macro `error_expected_unstable_or_stable_feature` in this scope
[INFO] [stderr]   --> src/mod.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | error_expected_unstable_or_stable_feature!();
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `ocf`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: cannot find macro `error_expected_unstable_or_stable_feature` in this scope
[INFO] [stderr]   --> src/mod.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | error_expected_unstable_or_stable_feature!();
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `ocf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4f9dae43cb4c8f2e2c2b5bd8939eca96e3559194d650166911197dca44de312d"`
[INFO] running `"docker" "rm" "-f" "4f9dae43cb4c8f2e2c2b5bd8939eca96e3559194d650166911197dca44de312d"`
[INFO] [stdout] 4f9dae43cb4c8f2e2c2b5bd8939eca96e3559194d650166911197dca44de312d