[INFO] updating cached repository https://github.com/Lait-au-Cafe/rabin_karp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3726a49fb6ce1f0c7db464d807064732d751b676
[INFO] testing Lait-au-Cafe/rabin_karp against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Frabin_karp" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lait-au-Cafe/rabin_karp on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Lait-au-Cafe/rabin_karp
[INFO] finished tweaking git repo https://github.com/Lait-au-Cafe/rabin_karp
[INFO] tweaked toml for git repo https://github.com/Lait-au-Cafe/rabin_karp written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Lait-au-Cafe/rabin_karp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c2fc736e99c46f5ef37bf6fee44306d4eead99cbfc4f0b3cc74fced60ec83ba
[INFO] running `"docker" "start" "-a" "5c2fc736e99c46f5ef37bf6fee44306d4eead99cbfc4f0b3cc74fced60ec83ba"`
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling libc v0.2.28
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.40
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num-bigint v0.1.40
[INFO] [stderr]    Compiling num-rational v0.1.39
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling rabin_karp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:103:65
[INFO] [stderr]     |
[INFO] [stderr] 103 |             Err(why)    => panic!("Could not open a file. :{}", Error::description(&why)),
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.97s
[INFO] running `"docker" "inspect" "5c2fc736e99c46f5ef37bf6fee44306d4eead99cbfc4f0b3cc74fced60ec83ba"`
[INFO] running `"docker" "rm" "-f" "5c2fc736e99c46f5ef37bf6fee44306d4eead99cbfc4f0b3cc74fced60ec83ba"`
[INFO] [stdout] 5c2fc736e99c46f5ef37bf6fee44306d4eead99cbfc4f0b3cc74fced60ec83ba
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 51ceb3d05754fe74d87ca50e9130558acb709bdea366ca47b1b08fadf217479a
[INFO] running `"docker" "start" "-a" "51ceb3d05754fe74d87ca50e9130558acb709bdea366ca47b1b08fadf217479a"`
[INFO] [stderr]    Compiling rabin_karp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:103:65
[INFO] [stderr]     |
[INFO] [stderr] 103 |             Err(why)    => panic!("Could not open a file. :{}", Error::description(&why)),
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "51ceb3d05754fe74d87ca50e9130558acb709bdea366ca47b1b08fadf217479a"`
[INFO] running `"docker" "rm" "-f" "51ceb3d05754fe74d87ca50e9130558acb709bdea366ca47b1b08fadf217479a"`
[INFO] [stdout] 51ceb3d05754fe74d87ca50e9130558acb709bdea366ca47b1b08fadf217479a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 39b65d397f87f5ecedad7fa8719f79923b6300ad2f60dcc3a5543c64b680d84e
[INFO] running `"docker" "start" "-a" "39b65d397f87f5ecedad7fa8719f79923b6300ad2f60dcc3a5543c64b680d84e"`
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout] 
[INFO] [stderr]    --> src/main.rs:103:65
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 103 |             Err(why)    => panic!("Could not open a file. :{}", Error::description(&why)),
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rabin_karp-50b76cf6e22c62d2
[INFO] running `"docker" "inspect" "39b65d397f87f5ecedad7fa8719f79923b6300ad2f60dcc3a5543c64b680d84e"`
[INFO] running `"docker" "rm" "-f" "39b65d397f87f5ecedad7fa8719f79923b6300ad2f60dcc3a5543c64b680d84e"`
[INFO] [stdout] 39b65d397f87f5ecedad7fa8719f79923b6300ad2f60dcc3a5543c64b680d84e