[INFO] fetching crate color-backtrace 0.2.3...
[INFO] checking color-backtrace-0.2.3 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate color-backtrace 0.2.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate color-backtrace 0.2.3 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate color-backtrace 0.2.3
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate color-backtrace 0.2.3
[INFO] tweaked toml for crates.io crate color-backtrace 0.2.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate color-backtrace 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 290e4c5895b1681e254d8333bc37466e41ffdd4a406b12d987e178eb76f5c0ed
[INFO] running `"docker" "start" "-a" "290e4c5895b1681e254d8333bc37466e41ffdd4a406b12d987e178eb76f5c0ed"`
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking findshlibs v0.5.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking gimli v0.18.0
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]     Checking intervaltree v0.2.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking scroll v0.9.2
[INFO] [stderr]     Checking goblin v0.0.23
[INFO] [stderr]     Checking addr2line v0.9.0
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking color-backtrace v0.2.3 (/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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "290e4c5895b1681e254d8333bc37466e41ffdd4a406b12d987e178eb76f5c0ed"`
[INFO] running `"docker" "rm" "-f" "290e4c5895b1681e254d8333bc37466e41ffdd4a406b12d987e178eb76f5c0ed"`
[INFO] [stdout] 290e4c5895b1681e254d8333bc37466e41ffdd4a406b12d987e178eb76f5c0ed