[INFO] cloning repository https://github.com/jmatss/multicast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmatss/multicast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatss%2Fmulticast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatss%2Fmulticast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f148da85908aadbf6f780e6690116dec21e8d78f
[INFO] checking jmatss/multicast against master#8387315ab3c26a57a1f53a90f188f0bc88514bca for pr-124605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatss%2Fmulticast" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmatss/multicast on toolchain 8387315ab3c26a57a1f53a90f188f0bc88514bca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmatss/multicast
[INFO] finished tweaking git repo https://github.com/jmatss/multicast
[INFO] tweaked toml for git repo https://github.com/jmatss/multicast written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jmatss/multicast already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking jmatss/multicast against try#fcc50f77e1a14e407d895972348a0ff09eafc210 for pr-124605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatss%2Fmulticast" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmatss/multicast on toolchain fcc50f77e1a14e407d895972348a0ff09eafc210
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmatss/multicast
[INFO] finished tweaking git repo https://github.com/jmatss/multicast
[INFO] tweaked toml for git repo https://github.com/jmatss/multicast written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jmatss/multicast already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b716950a021ce5b456eb0b22039c1f530850da9c21f5eb845cc42c0ff93be1dc
[INFO] running `Command { std: "docker" "start" "-a" "b716950a021ce5b456eb0b22039c1f530850da9c21f5eb845cc42c0ff93be1dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b716950a021ce5b456eb0b22039c1f530850da9c21f5eb845cc42c0ff93be1dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b716950a021ce5b456eb0b22039c1f530850da9c21f5eb845cc42c0ff93be1dc", kill_on_drop: false }`
[INFO] [stdout] b716950a021ce5b456eb0b22039c1f530850da9c21f5eb845cc42c0ff93be1dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5ce0be65e8d2200519beb730c110b7717c0a13e8fbac7edd5ec8e36c7b46428
[INFO] running `Command { std: "docker" "start" "-a" "c5ce0be65e8d2200519beb730c110b7717c0a13e8fbac7edd5ec8e36c7b46428", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking multicast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "c5ce0be65e8d2200519beb730c110b7717c0a13e8fbac7edd5ec8e36c7b46428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5ce0be65e8d2200519beb730c110b7717c0a13e8fbac7edd5ec8e36c7b46428", kill_on_drop: false }`
[INFO] [stdout] c5ce0be65e8d2200519beb730c110b7717c0a13e8fbac7edd5ec8e36c7b46428