[INFO] cloning repository https://github.com/soenkehahn/rust-skipchannel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/soenkehahn/rust-skipchannel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Frust-skipchannel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Frust-skipchannel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 477ff3cb0f82891cff488447705f39a7df1c2486
[INFO] checking soenkehahn/rust-skipchannel against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Frust-skipchannel" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soenkehahn/rust-skipchannel on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soenkehahn/rust-skipchannel
[INFO] finished tweaking git repo https://github.com/soenkehahn/rust-skipchannel
[INFO] tweaked toml for git repo https://github.com/soenkehahn/rust-skipchannel written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/soenkehahn/rust-skipchannel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1edf2679002bc5a8ff73a63cb106758a5f81da16d9dbbb8e464bb4097059cd48
[INFO] running `Command { std: "docker" "start" "-a" "1edf2679002bc5a8ff73a63cb106758a5f81da16d9dbbb8e464bb4097059cd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1edf2679002bc5a8ff73a63cb106758a5f81da16d9dbbb8e464bb4097059cd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1edf2679002bc5a8ff73a63cb106758a5f81da16d9dbbb8e464bb4097059cd48", kill_on_drop: false }`
[INFO] [stdout] 1edf2679002bc5a8ff73a63cb106758a5f81da16d9dbbb8e464bb4097059cd48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03840a6c7cf0da7fc6e936c2b0a8b1e87af0c7cfb3c7bd6b5de9cca26ed37e27
[INFO] running `Command { std: "docker" "start" "-a" "03840a6c7cf0da7fc6e936c2b0a8b1e87af0c7cfb3c7bd6b5de9cca26ed37e27", kill_on_drop: false }`
[INFO] [stderr]     Checking skipchannel v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:110:36
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 Err(err) => panic!(err),
[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 use the Debug implementation of `Box<dyn Any + Send>`
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 Err(err) => panic!("{:?}", err),
[INFO] [stdout]     |                                    +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 Err(err) => std::panic::panic_any(err),
[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 0.68s
[INFO] running `Command { std: "docker" "inspect" "03840a6c7cf0da7fc6e936c2b0a8b1e87af0c7cfb3c7bd6b5de9cca26ed37e27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03840a6c7cf0da7fc6e936c2b0a8b1e87af0c7cfb3c7bd6b5de9cca26ed37e27", kill_on_drop: false }`
[INFO] [stdout] 03840a6c7cf0da7fc6e936c2b0a8b1e87af0c7cfb3c7bd6b5de9cca26ed37e27