[INFO] cloning repository https://github.com/meambobbo/rust-hello-pain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meambobbo/rust-hello-pain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeambobbo%2Frust-hello-pain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeambobbo%2Frust-hello-pain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74113bec917bb89d0ad52f95bd556300b5b183ca
[INFO] checking meambobbo/rust-hello-pain against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeambobbo%2Frust-hello-pain" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meambobbo/rust-hello-pain on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/meambobbo/rust-hello-pain
[INFO] finished tweaking git repo https://github.com/meambobbo/rust-hello-pain
[INFO] tweaked toml for git repo https://github.com/meambobbo/rust-hello-pain written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/meambobbo/rust-hello-pain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c1e1be04896067d2d48dcd0d72e8f902b4624f7d228c22b379cc7995201e87a
[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" "1c1e1be04896067d2d48dcd0d72e8f902b4624f7d228c22b379cc7995201e87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c1e1be04896067d2d48dcd0d72e8f902b4624f7d228c22b379cc7995201e87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c1e1be04896067d2d48dcd0d72e8f902b4624f7d228c22b379cc7995201e87a", kill_on_drop: false }`
[INFO] [stdout] 1c1e1be04896067d2d48dcd0d72e8f902b4624f7d228c22b379cc7995201e87a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] 9d21a0174dcc4f0d56e4cbcab1d8bd63cbf9e1ec881eb0d7ec0f1b9e6058207f
[INFO] running `Command { std: "docker" "start" "-a" "9d21a0174dcc4f0d56e4cbcab1d8bd63cbf9e1ec881eb0d7ec0f1b9e6058207f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-hello-pain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Error};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Error};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |         Ok(i) => println!("we got an ok result"),
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Err(e) => println!("we got an err result ... pure sadness")
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `another`
[INFO] [stdout]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let another: &str = default.as_str();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |         Ok(i) => println!("we got an ok result"),
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Err(e) => println!("we got an err result ... pure sadness")
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `another`
[INFO] [stdout]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let another: &str = default.as_str();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MyError`
[INFO] [stdout]    --> src/main.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | struct MyError(Error);
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `fromFloat` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn fromFloat(float_val: f64) -> Result<i32, String>;
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `from_float`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MyError`
[INFO] [stdout]    --> src/main.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | struct MyError(Error);
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `fromFloat` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn fromFloat(float_val: f64) -> Result<i32, String>;
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `from_float`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[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 0.33s
[INFO] running `Command { std: "docker" "inspect" "9d21a0174dcc4f0d56e4cbcab1d8bd63cbf9e1ec881eb0d7ec0f1b9e6058207f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d21a0174dcc4f0d56e4cbcab1d8bd63cbf9e1ec881eb0d7ec0f1b9e6058207f", kill_on_drop: false }`
[INFO] [stdout] 9d21a0174dcc4f0d56e4cbcab1d8bd63cbf9e1ec881eb0d7ec0f1b9e6058207f