[INFO] cloning repository https://github.com/archer884/avg_scast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/archer884/avg_scast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Favg_scast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Favg_scast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c87523c5a5e28005d8b9cbb4227e2c11669deecf
[INFO] testing archer884/avg_scast against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Favg_scast" "/workspace/builds/worker-106/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-106/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/archer884/avg_scast 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 git repo https://github.com/archer884/avg_scast
[INFO] finished tweaking git repo https://github.com/archer884/avg_scast
[INFO] tweaked toml for git repo https://github.com/archer884/avg_scast written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate git repo https://github.com/archer884/avg_scast 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] [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-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] [stdout] afc4f7d64293236ab9f1f18124971d914bc06566f4f5298b23395a78f6d75e74
[INFO] running `Command { std: "docker" "start" "-a" "afc4f7d64293236ab9f1f18124971d914bc06566f4f5298b23395a78f6d75e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afc4f7d64293236ab9f1f18124971d914bc06566f4f5298b23395a78f6d75e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afc4f7d64293236ab9f1f18124971d914bc06566f4f5298b23395a78f6d75e74", kill_on_drop: false }`
[INFO] [stdout] afc4f7d64293236ab9f1f18124971d914bc06566f4f5298b23395a78f6d75e74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 405b1fb0fdac1ab3d0e01232323b5f7fd2a724bf21a6d9ced8baefe26ee323af
[INFO] running `Command { std: "docker" "start" "-a" "405b1fb0fdac1ab3d0e01232323b5f7fd2a724bf21a6d9ced8baefe26ee323af", kill_on_drop: false }`
[INFO] [stderr]    Compiling avg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         values.push(try!(arg.parse()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:24:62
[INFO] [stdout]    |
[INFO] [stdout] 24 |         AppError(format!("Unable to parse values: {}", error.description()))
[INFO] [stdout]    |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(e) => println!("{}", e.description()),
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `avg` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "405b1fb0fdac1ab3d0e01232323b5f7fd2a724bf21a6d9ced8baefe26ee323af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "405b1fb0fdac1ab3d0e01232323b5f7fd2a724bf21a6d9ced8baefe26ee323af", kill_on_drop: false }`
[INFO] [stdout] 405b1fb0fdac1ab3d0e01232323b5f7fd2a724bf21a6d9ced8baefe26ee323af