[INFO] cloning repository https://github.com/caporta/rust_fundamentals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/caporta/rust_fundamentals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaporta%2Frust_fundamentals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaporta%2Frust_fundamentals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78a5378e3b3c9e32237f5f6bcc8083bd250e7b8d
[INFO] checking caporta/rust_fundamentals against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaporta%2Frust_fundamentals" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/caporta/rust_fundamentals on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/caporta/rust_fundamentals
[INFO] finished tweaking git repo https://github.com/caporta/rust_fundamentals
[INFO] tweaked toml for git repo https://github.com/caporta/rust_fundamentals written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/caporta/rust_fundamentals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5a9de0a4c3c6abcd85c55ac2105b2a4071008578711baccb7a4a1268af2c587
[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" "e5a9de0a4c3c6abcd85c55ac2105b2a4071008578711baccb7a4a1268af2c587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5a9de0a4c3c6abcd85c55ac2105b2a4071008578711baccb7a4a1268af2c587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5a9de0a4c3c6abcd85c55ac2105b2a4071008578711baccb7a4a1268af2c587", kill_on_drop: false }`
[INFO] [stdout] e5a9de0a4c3c6abcd85c55ac2105b2a4071008578711baccb7a4a1268af2c587
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a521e12341187c11583aa22a4795b81fe473ad455d0b6f351699408efb9b719
[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" "7a521e12341187c11583aa22a4795b81fe473ad455d0b6f351699408efb9b719", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `unused_variable`
[INFO] [stdout]  --> src/stack_and_heap.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[allow(unused_variable)]
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^ help: did you mean: `unused_variables`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unused_variable`
[INFO] [stdout]  --> src/stack_and_heap.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[allow(unused_variable)]
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^ help: did you mean: `unused_variables`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/control_flow.rs:64:10
[INFO] [stdout]    |
[INFO] [stdout] 64 |         1...999 => "unknown", // inclusive range notation (opposite in most langs)
[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/pattern_matching.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stdout]   |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/control_flow.rs:64:10
[INFO] [stdout]    |
[INFO] [stdout] 64 |         1...999 => "unknown", // inclusive range notation (opposite in most langs)
[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/pattern_matching.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stdout]   |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/stack_and_heap.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let x = 5; // i32 stored on the stack
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/data_structures_2.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let u:&str = &letters; // d-ref conversions
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/pattern_matching.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myLine`
[INFO] [stdout]   --> src/generics.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_myLine`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/stack_and_heap.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let x = 5; // i32 stored on the stack
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/data_structures_2.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let u:&str = &letters; // d-ref conversions
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/pattern_matching.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myLine`
[INFO] [stdout]   --> src/generics.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_myLine`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/stack_and_heap.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     y: f64
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]   --> src/data_structures_1.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Red, // "memberless struct"
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/data_structures_1.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Green, // "memberless struct"
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]   --> src/data_structures_1.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Blue, // etc...
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RGBColor`
[INFO] [stdout]   --> src/data_structures_1.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cyan`
[INFO] [stdout]   --> src/data_structures_1.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `magenta`
[INFO] [stdout]   --> src/data_structures_1.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `yellow`
[INFO] [stdout]   --> src/data_structures_1.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]  --> src/generics.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     start: Point<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]  --> src/generics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     end: Point<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/data_structures_1.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/generics.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/stack_and_heap.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     y: f64
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]   --> src/data_structures_1.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Red, // "memberless struct"
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/data_structures_1.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Green, // "memberless struct"
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]   --> src/data_structures_1.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Blue, // etc...
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RGBColor`
[INFO] [stdout]   --> src/data_structures_1.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cyan`
[INFO] [stdout]   --> src/data_structures_1.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `magenta`
[INFO] [stdout]   --> src/data_structures_1.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `yellow`
[INFO] [stdout]   --> src/data_structures_1.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stdout]    |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]  --> src/generics.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     start: Point<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]  --> src/generics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     end: Point<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/data_structures_1.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/generics.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "7a521e12341187c11583aa22a4795b81fe473ad455d0b6f351699408efb9b719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a521e12341187c11583aa22a4795b81fe473ad455d0b6f351699408efb9b719", kill_on_drop: false }`
[INFO] [stdout] 7a521e12341187c11583aa22a4795b81fe473ad455d0b6f351699408efb9b719