[INFO] crate test-env-log 0.2.2 is already in cache
[INFO] checking test-env-log-0.2.2 against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] extracting crate test-env-log 0.2.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate test-env-log 0.2.2 on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate test-env-log 0.2.2
[INFO] finished tweaking crates.io crate test-env-log 0.2.2
[INFO] tweaked toml for crates.io crate test-env-log 0.2.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84cc3caa73717832fad72ac7e6c959f91c48e9dfc5f4b1ca4a498afe1361b4fe
[INFO] running `"docker" "start" "-a" "84cc3caa73717832fad72ac7e6c959f91c48e9dfc5f4b1ca4a498afe1361b4fe"`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.1.6
[INFO] [stderr]     Checking test-env-log v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.7
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]     Checking tokio v0.2.10
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr] error[E0412]: cannot find type `Once` in crate `tracing_core`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tracing-0.1.12/src/lib.rs:759:35
[INFO] [stderr]     |
[INFO] [stderr] 759 |     pub type Once = tracing_core::Once<()>;
[INFO] [stderr]     |                                   ^^^^ not found in `tracing_core`
[INFO] [stderr]     |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]     |
[INFO] [stderr] 753 |     use core::iter::Once;
[INFO] [stderr]     |
[INFO] [stderr] 753 |     use crate::__macro_support::Once;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `tracing`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "84cc3caa73717832fad72ac7e6c959f91c48e9dfc5f4b1ca4a498afe1361b4fe"`
[INFO] running `"docker" "rm" "-f" "84cc3caa73717832fad72ac7e6c959f91c48e9dfc5f4b1ca4a498afe1361b4fe"`
[INFO] [stdout] 84cc3caa73717832fad72ac7e6c959f91c48e9dfc5f4b1ca4a498afe1361b4fe