[INFO] fetching crate test-env-log 0.2.2...
[INFO] checking test-env-log-0.2.2 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate test-env-log 0.2.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate test-env-log 0.2.2 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a37464c6a3f9ff94a94742915b9f3598983215fffe928f503f6c6b42757c020
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7a37464c6a3f9ff94a94742915b9f3598983215fffe928f503f6c6b42757c020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a37464c6a3f9ff94a94742915b9f3598983215fffe928f503f6c6b42757c020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a37464c6a3f9ff94a94742915b9f3598983215fffe928f503f6c6b42757c020", kill_on_drop: false }`
[INFO] [stdout] 7a37464c6a3f9ff94a94742915b9f3598983215fffe928f503f6c6b42757c020
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e170c2a2727e0b61df1f7dac644117f762688810de11d5c1fd2ee138baae67c1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e170c2a2727e0b61df1f7dac644117f762688810de11d5c1fd2ee138baae67c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking regex-automata v0.1.9
[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 pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stdout] error: cannot find attribute `instrument` in this scope
[INFO] [stdout]   --> tests/mod.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[instrument]
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::instrument`
[INFO] [stdout]  --> tests/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::instrument;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test-env-log`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e170c2a2727e0b61df1f7dac644117f762688810de11d5c1fd2ee138baae67c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e170c2a2727e0b61df1f7dac644117f762688810de11d5c1fd2ee138baae67c1", kill_on_drop: false }`
[INFO] [stdout] e170c2a2727e0b61df1f7dac644117f762688810de11d5c1fd2ee138baae67c1