[INFO] cloning repository https://github.com/gterzian/simple_chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gterzian/simple_chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f85ae5a882d8a0bdc8554d708fc6880d841c359
[INFO] checking gterzian/simple_chat against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat" "/workspace/builds/worker-51/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-51/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gterzian/simple_chat on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-51/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/gterzian/simple_chat
[INFO] finished tweaking git repo https://github.com/gterzian/simple_chat
[INFO] tweaked toml for git repo https://github.com/gterzian/simple_chat written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate git repo https://github.com/gterzian/simple_chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20e14742ce634ec821b13f7572d84ca20022fa76525dc27f1419aa849f96f97e
[INFO] running `Command { std: "docker" "start" "-a" "20e14742ce634ec821b13f7572d84ca20022fa76525dc27f1419aa849f96f97e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20e14742ce634ec821b13f7572d84ca20022fa76525dc27f1419aa849f96f97e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e14742ce634ec821b13f7572d84ca20022fa76525dc27f1419aa849f96f97e", kill_on_drop: false }`
[INFO] [stdout] 20e14742ce634ec821b13f7572d84ca20022fa76525dc27f1419aa849f96f97e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fac3dcab5ea16a74e53cfc389592661276da9ac0a29fb11171424ffcbe84394b
[INFO] running `Command { std: "docker" "start" "-a" "fac3dcab5ea16a74e53cfc389592661276da9ac0a29fb11171424ffcbe84394b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling tinyfiledialogs v3.3.5
[INFO] [stderr]     Checking simple_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/main.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                                                                ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("{}", "unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/main.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                                                                ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("{}", "unknown argument - usage is 'cargo run -- {server|client}")
[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 9.23s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fac3dcab5ea16a74e53cfc389592661276da9ac0a29fb11171424ffcbe84394b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac3dcab5ea16a74e53cfc389592661276da9ac0a29fb11171424ffcbe84394b", kill_on_drop: false }`
[INFO] [stdout] fac3dcab5ea16a74e53cfc389592661276da9ac0a29fb11171424ffcbe84394b