[INFO] cloning repository https://github.com/Lait-au-Cafe/rabin_karp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lait-au-Cafe/rabin_karp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Frabin_karp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Frabin_karp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3726a49fb6ce1f0c7db464d807064732d751b676
[INFO] checking Lait-au-Cafe/rabin_karp against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Frabin_karp" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lait-au-Cafe/rabin_karp on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97788a12463493a44dd1a722cb883c283fd40d6e64e118da9142789bbf472272
[INFO] running `Command { std: "docker" "start" "-a" "97788a12463493a44dd1a722cb883c283fd40d6e64e118da9142789bbf472272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97788a12463493a44dd1a722cb883c283fd40d6e64e118da9142789bbf472272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97788a12463493a44dd1a722cb883c283fd40d6e64e118da9142789bbf472272", kill_on_drop: false }`
[INFO] [stdout] 97788a12463493a44dd1a722cb883c283fd40d6e64e118da9142789bbf472272
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c77f0a8808b8b1aeaa5f6a0909c306d09476b6f1b5142fd3bd9c8939e6abc33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c77f0a8808b8b1aeaa5f6a0909c306d09476b6f1b5142fd3bd9c8939e6abc33", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking libc v0.2.28
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking rabin_karp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:103:65
[INFO] [stdout]     |
[INFO] [stdout] 103 |             Err(why)    => panic!("Could not open a file. :{}", Error::description(&why)),
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:103:65
[INFO] [stdout]     |
[INFO] [stdout] 103 |             Err(why)    => panic!("Could not open a file. :{}", Error::description(&why)),
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.92s
[INFO] running `Command { std: "docker" "inspect" "2c77f0a8808b8b1aeaa5f6a0909c306d09476b6f1b5142fd3bd9c8939e6abc33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c77f0a8808b8b1aeaa5f6a0909c306d09476b6f1b5142fd3bd9c8939e6abc33", kill_on_drop: false }`
[INFO] [stdout] 2c77f0a8808b8b1aeaa5f6a0909c306d09476b6f1b5142fd3bd9c8939e6abc33