[INFO] crate usher 0.2.0 is already in cache
[INFO] checking usher-0.2.0 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] extracting crate usher 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate usher 0.2.0 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate usher 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate usher 0.2.0
[INFO] tweaked toml for crates.io crate usher 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate usher 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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-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" "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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 495b74d53bde609c31bdc781531d6cab74cfc0694d33262d71a8fc02a8f5a0e3
[INFO] running `"docker" "start" "-a" "495b74d53bde609c31bdc781531d6cab74cfc0694d33262d71a8fc02a8f5a0e3"`
[INFO] [stderr]     Checking usher v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr] error[E0432]: unresolved import `criterion`
[INFO] [stderr]  --> benches/usher.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use criterion::{criterion_group, criterion_main, Criterion};
[INFO] [stderr]   |     ^^^^^^^^^ use of undeclared type or module `criterion`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `criterion_group`
[INFO] [stderr]   --> benches/usher.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | criterion_group!(benches, benchmark);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `criterion_main`
[INFO] [stderr]   --> benches/usher.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | criterion_main!(benches);
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `usher`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "495b74d53bde609c31bdc781531d6cab74cfc0694d33262d71a8fc02a8f5a0e3"`
[INFO] running `"docker" "rm" "-f" "495b74d53bde609c31bdc781531d6cab74cfc0694d33262d71a8fc02a8f5a0e3"`
[INFO] [stdout] 495b74d53bde609c31bdc781531d6cab74cfc0694d33262d71a8fc02a8f5a0e3