[INFO] cloning repository https://github.com/JamesVictor-O/custom_library
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JamesVictor-O/custom_library" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesVictor-O%2Fcustom_library", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesVictor-O%2Fcustom_library'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 999f9a724ddae8e7f1d09c666a0c9039ee60d322
[INFO] checking JamesVictor-O/custom_library against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesVictor-O%2Fcustom_library" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JamesVictor-O/custom_library
[INFO] finished tweaking git repo https://github.com/JamesVictor-O/custom_library
[INFO] tweaked toml for git repo https://github.com/JamesVictor-O/custom_library written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JamesVictor-O/custom_library on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JamesVictor-O/custom_library already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d1a3520cad5105697068d7ece7ca45d7d42ab47c318238ef86d438e641d7e7d
[INFO] running `Command { std: "docker" "start" "-a" "5d1a3520cad5105697068d7ece7ca45d7d42ab47c318238ef86d438e641d7e7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d1a3520cad5105697068d7ece7ca45d7d42ab47c318238ef86d438e641d7e7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d1a3520cad5105697068d7ece7ca45d7d42ab47c318238ef86d438e641d7e7d", kill_on_drop: false }`
[INFO] [stdout] 5d1a3520cad5105697068d7ece7ca45d7d42ab47c318238ef86d438e641d7e7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c5635f55c7d938f03cc4fc00f400492470142edc630295fd5a8d3c5963c36e4
[INFO] running `Command { std: "docker" "start" "-a" "8c5635f55c7d938f03cc4fc00f400492470142edc630295fd5a8d3c5963c36e4", kill_on_drop: false }`
[INFO] [stderr]     Checking custom_library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut owner= Owner {name: String::from("James")};
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut owner= Owner {name: String::from("James")};
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let p = Points {y:1.0, x:2.0};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let c:Color= Color(255, 0, 128);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let p = Points {y:1.0, x:2.0};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `points_2D`
[INFO] [stdout]    --> src/main.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let points_2D: (i32, i32) = (1,3);
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_points_2D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let c:Color= Color(255, 0, 128);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `points2_3D`
[INFO] [stdout]    --> src/main.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let points2_3D= (4,10, 13);
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_points2_3D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `points_2D`
[INFO] [stdout]    --> src/main.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let points_2D: (i32, i32) = (1,3);
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_points_2D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `points2_3D`
[INFO] [stdout]    --> src/main.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let points2_3D= (4,10, 13);
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_points2_3D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/main.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |  struct Points { x: f64, y:f64}
[INFO] [stdout]    |         ------   ^       ^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |  struct Color(u8,u8,u8);
[INFO] [stdout]    |         ----- ^^ ^^ ^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/main.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |  struct Points { x: f64, y:f64}
[INFO] [stdout]    |         ------   ^       ^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/main.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |  struct Owner {name:String}
[INFO] [stdout]    |         -----  ^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Owner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sell` is never used
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl  Car {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn  sell(self) -> Car{
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |  struct Color(u8,u8,u8);
[INFO] [stdout]    |         ----- ^^ ^^ ^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/main.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |  struct Owner {name:String}
[INFO] [stdout]    |         -----  ^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Owner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sell` is never used
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl  Car {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn  sell(self) -> Car{
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         self.fuel_level + gallons;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = self.fuel_level + gallons;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         self.fuel_level + gallons;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = self.fuel_level + gallons;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `secondOwner` should have a snake case name
[INFO] [stdout]   --> src/main.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let secondOwner= owner;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `second_owner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `points_2D` should have a snake case name
[INFO] [stdout]    --> src/main.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let points_2D: (i32, i32) = (1,3);
[INFO] [stdout]     |         ^^^^^^^^^ help: convert the identifier to snake case: `points_2_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `points2_3D` should have a snake case name
[INFO] [stdout]    --> src/main.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let points2_3D= (4,10, 13);
[INFO] [stdout]     |         ^^^^^^^^^^ help: convert the identifier to snake case: `points2_3_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `secondOwner` should have a snake case name
[INFO] [stdout]   --> src/main.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let secondOwner= owner;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `second_owner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `points_2D` should have a snake case name
[INFO] [stdout]    --> src/main.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let points_2D: (i32, i32) = (1,3);
[INFO] [stdout]     |         ^^^^^^^^^ help: convert the identifier to snake case: `points_2_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `points2_3D` should have a snake case name
[INFO] [stdout]    --> src/main.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let points2_3D= (4,10, 13);
[INFO] [stdout]     |         ^^^^^^^^^^ help: convert the identifier to snake case: `points2_3_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "8c5635f55c7d938f03cc4fc00f400492470142edc630295fd5a8d3c5963c36e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5635f55c7d938f03cc4fc00f400492470142edc630295fd5a8d3c5963c36e4", kill_on_drop: false }`
[INFO] [stdout] 8c5635f55c7d938f03cc4fc00f400492470142edc630295fd5a8d3c5963c36e4
