[INFO] crate difference 2.0.0 is already in cache
[INFO] checking difference-2.0.0 against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] extracting crate difference 2.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate difference 2.0.0 on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate difference 2.0.0
[INFO] finished tweaking crates.io crate difference 2.0.0
[INFO] tweaked toml for crates.io crate difference 2.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+4662032ab74cd44d423120d08d251dfead4914a0" "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] f9a1bee38721fa70cd3b2a5f488d9351adf1279f8a092b62cd2b32655391bd97
[INFO] running `"docker" "start" "-a" "f9a1bee38721fa70cd3b2a5f488d9351adf1279f8a092b62cd2b32655391bd97"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking difference v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/display.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 |                     try!(write!(f, "{}{}", x, self.split));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/display.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 |                     try!(write!(f, "\x1b[92m{}\x1b[0m{}", x, self.split));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/display.rs:17:21
[INFO] [stderr]    |
[INFO] [stderr] 17 |                     try!(write!(f, "\x1b[91m{}\x1b[0m{}", x, self.split));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `difference`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f9a1bee38721fa70cd3b2a5f488d9351adf1279f8a092b62cd2b32655391bd97"`
[INFO] running `"docker" "rm" "-f" "f9a1bee38721fa70cd3b2a5f488d9351adf1279f8a092b62cd2b32655391bd97"`
[INFO] [stdout] f9a1bee38721fa70cd3b2a5f488d9351adf1279f8a092b62cd2b32655391bd97