[INFO] crate color-backtrace 0.3.0 is already in cache
[INFO] checking color-backtrace-0.3.0 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate color-backtrace 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate color-backtrace 0.3.0 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate color-backtrace 0.3.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate color-backtrace 0.3.0
[INFO] tweaked toml for crates.io crate color-backtrace 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate color-backtrace 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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] 523d3da27caa0f0f78bf0069fc400c6d3c9d2cc3bca52bbeda375c2e7e80a1a0
[INFO] running `"docker" "start" "-a" "523d3da27caa0f0f78bf0069fc400c6d3c9d2cc3bca52bbeda375c2e7e80a1a0"`
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking findshlibs v0.5.0
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]     Checking intervaltree v0.2.4
[INFO] [stderr]     Checking gimli v0.19.0
[INFO] [stderr]     Checking goblin v0.0.24
[INFO] [stderr]     Checking addr2line v0.10.0
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking color-backtrace v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `color_backtrace::failure`
[INFO] [stderr]  --> examples/failure.rs:1:23
[INFO] [stderr]   |
[INFO] [stderr] 1 | use color_backtrace::{failure::print_backtrace, Settings};
[INFO] [stderr]   |                       ^^^^^^^ could not find `failure` in `color_backtrace`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `failure`
[INFO] [stderr]  --> examples/failure.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use failure::{format_err, Fallible};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `failure`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `format_err`
[INFO] [stderr]  --> examples/failure.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Err(format_err!("something went wrong"))
[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 `color-backtrace`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "523d3da27caa0f0f78bf0069fc400c6d3c9d2cc3bca52bbeda375c2e7e80a1a0"`
[INFO] running `"docker" "rm" "-f" "523d3da27caa0f0f78bf0069fc400c6d3c9d2cc3bca52bbeda375c2e7e80a1a0"`
[INFO] [stdout] 523d3da27caa0f0f78bf0069fc400c6d3c9d2cc3bca52bbeda375c2e7e80a1a0