[INFO] cloning repository https://github.com/Knium/monkey-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Knium/monkey-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnium%2Fmonkey-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnium%2Fmonkey-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 162ce00fc429fd27685fd5a33e3b37eb49388b75
[INFO] checking Knium/monkey-rs against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnium%2Fmonkey-rs" "/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/Knium/monkey-rs on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Knium/monkey-rs
[INFO] finished tweaking git repo https://github.com/Knium/monkey-rs
[INFO] tweaked toml for git repo https://github.com/Knium/monkey-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Knium/monkey-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b8701be16e75e08435bf22f25ec4683b8a3619b29677f49a5a92d08a4a43494e
[INFO] running `Command { std: "docker" "start" "-a" "b8701be16e75e08435bf22f25ec4683b8a3619b29677f49a5a92d08a4a43494e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8701be16e75e08435bf22f25ec4683b8a3619b29677f49a5a92d08a4a43494e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8701be16e75e08435bf22f25ec4683b8a3619b29677f49a5a92d08a4a43494e", kill_on_drop: false }`
[INFO] [stdout] b8701be16e75e08435bf22f25ec4683b8a3619b29677f49a5a92d08a4a43494e
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d388310f98f436f4b9270c1ca108256d9af6929b678db604a72ab67b9999908d
[INFO] running `Command { std: "docker" "start" "-a" "d388310f98f436f4b9270c1ca108256d9af6929b678db604a72ab67b9999908d", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `if_while_or_patterns` has been stable since 1.33.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(if_while_or_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/ast.rs:335:60
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("parse error: unexpected token {:?}"),
[INFO] [stdout]     |                                                            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in a future Rust edition
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("parse error: unexpected token {:?}", ...),
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("{}", "parse error: unexpected token {:?}"),
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `if_while_or_patterns` has been stable since 1.33.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(if_while_or_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/ast.rs:335:60
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("parse error: unexpected token {:?}"),
[INFO] [stdout]     |                                                            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in a future Rust edition
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("parse error: unexpected token {:?}", ...),
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 _ => panic!("{}", "parse error: unexpected token {:?}"),
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "d388310f98f436f4b9270c1ca108256d9af6929b678db604a72ab67b9999908d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d388310f98f436f4b9270c1ca108256d9af6929b678db604a72ab67b9999908d", kill_on_drop: false }`
[INFO] [stdout] d388310f98f436f4b9270c1ca108256d9af6929b678db604a72ab67b9999908d