[INFO] cloning repository https://github.com/prasenjeetd/rust-custom-errors
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prasenjeetd/rust-custom-errors" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprasenjeetd%2Frust-custom-errors", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprasenjeetd%2Frust-custom-errors'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71d31239067cb520844f2fe9acc15e0a1bcd77fd
[INFO] checking prasenjeetd/rust-custom-errors against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprasenjeetd%2Frust-custom-errors" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prasenjeetd/rust-custom-errors on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/prasenjeetd/rust-custom-errors
[INFO] finished tweaking git repo https://github.com/prasenjeetd/rust-custom-errors
[INFO] tweaked toml for git repo https://github.com/prasenjeetd/rust-custom-errors written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/prasenjeetd/rust-custom-errors already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 622180afca8676763383445468f8f9796c7d0db53bf99a5bd152d974f94ebe37
[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" "622180afca8676763383445468f8f9796c7d0db53bf99a5bd152d974f94ebe37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "622180afca8676763383445468f8f9796c7d0db53bf99a5bd152d974f94ebe37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "622180afca8676763383445468f8f9796c7d0db53bf99a5bd152d974f94ebe37", kill_on_drop: false }`
[INFO] [stdout] 622180afca8676763383445468f8f9796c7d0db53bf99a5bd152d974f94ebe37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb6feb79b8a0b5b2b0f56f82c05ed556afc90dc411e5c7455a65b0a3a6b8d433
[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" "cb6feb79b8a0b5b2b0f56f82c05ed556afc90dc411e5c7455a65b0a3a6b8d433", kill_on_drop: false }`
[INFO] [stderr]     Checking rustq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:67
[INFO] [stdout]    |
[INFO] [stdout] 35 |         format!("error parsing '{}' as int: {}", num_as_string, e.description())
[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: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:67
[INFO] [stdout]    |
[INFO] [stdout] 35 |         format!("error parsing '{}' as int: {}", num_as_string, e.description())
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "cb6feb79b8a0b5b2b0f56f82c05ed556afc90dc411e5c7455a65b0a3a6b8d433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb6feb79b8a0b5b2b0f56f82c05ed556afc90dc411e5c7455a65b0a3a6b8d433", kill_on_drop: false }`
[INFO] [stdout] cb6feb79b8a0b5b2b0f56f82c05ed556afc90dc411e5c7455a65b0a3a6b8d433