[INFO] fetching crate herbert 0.2.1...
[INFO] checking herbert-0.2.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate herbert 0.2.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate herbert 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate herbert 0.2.1
[INFO] finished tweaking crates.io crate herbert 0.2.1
[INFO] tweaked toml for crates.io crate herbert 0.2.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate herbert 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 2f838c1aee1c04c232492a5065031d926d9df47328e0e14bc07bad676f6842e1
[INFO] running `Command { std: "docker" "start" "-a" "2f838c1aee1c04c232492a5065031d926d9df47328e0e14bc07bad676f6842e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f838c1aee1c04c232492a5065031d926d9df47328e0e14bc07bad676f6842e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f838c1aee1c04c232492a5065031d926d9df47328e0e14bc07bad676f6842e1", kill_on_drop: false }`
[INFO] [stdout] 2f838c1aee1c04c232492a5065031d926d9df47328e0e14bc07bad676f6842e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97d6325124d8cb9d19b511f1d86493f66dedca8dd84c3db5c59062cb14be1aa2
[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" "97d6325124d8cb9d19b511f1d86493f66dedca8dd84c3db5c59062cb14be1aa2", kill_on_drop: false }`
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking herbert v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking fern v0.5.9
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> examples/capture.rs:45:42
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         Err(e) => panic!(e),
[INFO] [stdout]    |                                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         Err(e) => panic!("{}", e),
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "97d6325124d8cb9d19b511f1d86493f66dedca8dd84c3db5c59062cb14be1aa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d6325124d8cb9d19b511f1d86493f66dedca8dd84c3db5c59062cb14be1aa2", kill_on_drop: false }`
[INFO] [stdout] 97d6325124d8cb9d19b511f1d86493f66dedca8dd84c3db5c59062cb14be1aa2
