[INFO] cloning repository https://github.com/AlexABallWebDev/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexABallWebDev/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexABallWebDev%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexABallWebDev%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1784c69f7bb2a7c150a86ea21e63bc1b73cb90dc
[INFO] checking AlexABallWebDev/rust_playground against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexABallWebDev%2Frust_playground" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlexABallWebDev/rust_playground on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlexABallWebDev/rust_playground
[INFO] finished tweaking git repo https://github.com/AlexABallWebDev/rust_playground
[INFO] tweaked toml for git repo https://github.com/AlexABallWebDev/rust_playground written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/AlexABallWebDev/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30e629ff02dcc6ece2663065ed624cc90ae4e8da5357024116dd4527efc57520
[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" "30e629ff02dcc6ece2663065ed624cc90ae4e8da5357024116dd4527efc57520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e629ff02dcc6ece2663065ed624cc90ae4e8da5357024116dd4527efc57520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e629ff02dcc6ece2663065ed624cc90ae4e8da5357024116dd4527efc57520", kill_on_drop: false }`
[INFO] [stdout] 30e629ff02dcc6ece2663065ed624cc90ae4e8da5357024116dd4527efc57520
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 603fc07dd2f9ba89de0767e36918c337416cf917c2e7ff2bc7303b0faa115c3a
[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" "603fc07dd2f9ba89de0767e36918c337416cf917c2e7ff2bc7303b0faa115c3a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/intro_1.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 320 |             'c: loop {
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |         13 ... 19 => println!("This is a \"teen\"", ),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:424:15
[INFO] [stdout]     |
[INFO] [stdout] 424 |         n @ 1 ... 12 => println!("n is between 1-12: {}", n),
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:425:16
[INFO] [stdout]     |
[INFO] [stdout] 425 |         n @ 13 ... 19 => println!("n is between 13-19: {}", n),
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:433:15
[INFO] [stdout]     |
[INFO] [stdout] 433 |         n @ 1 ... 12 => n + 1,
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:434:16
[INFO] [stdout]     |
[INFO] [stdout] 434 |         n @ 13 ... 19 => n + 2,
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/intro_1.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 320 |             'c: loop {
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |         13 ... 19 => println!("This is a \"teen\"", ),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:424:15
[INFO] [stdout]     |
[INFO] [stdout] 424 |         n @ 1 ... 12 => println!("n is between 1-12: {}", n),
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:425:16
[INFO] [stdout]     |
[INFO] [stdout] 425 |         n @ 13 ... 19 => println!("n is between 13-19: {}", n),
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:433:15
[INFO] [stdout]     |
[INFO] [stdout] 433 |         n @ 1 ... 12 => n + 1,
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/intro_1.rs:434:16
[INFO] [stdout]     |
[INFO] [stdout] 434 |         n @ 13 ... 19 => n + 2,
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "603fc07dd2f9ba89de0767e36918c337416cf917c2e7ff2bc7303b0faa115c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "603fc07dd2f9ba89de0767e36918c337416cf917c2e7ff2bc7303b0faa115c3a", kill_on_drop: false }`
[INFO] [stdout] 603fc07dd2f9ba89de0767e36918c337416cf917c2e7ff2bc7303b0faa115c3a