[INFO] cloning repository https://github.com/Franciszer/ready_set_boole
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Franciszer/ready_set_boole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranciszer%2Fready_set_boole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranciszer%2Fready_set_boole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a14da1930987ac524766a2af2cda409dd79235bf
[INFO] checking Franciszer/ready_set_boole against e3d12f3322cb00126b2208c6b9df3ac4467951f5 for pr-159706
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranciszer%2Fready_set_boole" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Franciszer/ready_set_boole
[INFO] finished tweaking git repo https://github.com/Franciszer/ready_set_boole
[INFO] tweaked toml for git repo https://github.com/Franciszer/ready_set_boole written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Franciszer/ready_set_boole on toolchain e3d12f3322cb00126b2208c6b9df3ac4467951f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Franciszer/ready_set_boole 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" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93
[INFO] running `Command { std: "docker" "start" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking ready_set_boole v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `formula`
[INFO] [stdout]   --> src/lib.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let formula = _lex(formula);
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_formula`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/lib.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut count = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]    --> src/lib.rs:97:21
[INFO] [stdout]     |
[INFO] [stdout]  97 |                     count += 1;
[INFO] [stdout]     |                     ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 101 |                     count += 2;
[INFO] [stdout]     |                     ---------- `count` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]    --> src/lib.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |                     count += 2;
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adder` is never used
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn adder(a: u32, b: u32) -> u32 {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplier` is never used
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn multiplier(a: u32, b: u32) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gray_code` is never used
[INFO] [stdout]   --> src/lib.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn gray_code(n: u32) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_formula` is never used
[INFO] [stdout]   --> src/lib.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn eval_formula(formula: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SimpleOpType` is never used
[INFO] [stdout]   --> src/lib.rs:41:10
[INFO] [stdout]    |
[INFO] [stdout] 41 |     type SimpleOpType = fn(bool) -> bool;
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `OpType` is never used
[INFO] [stdout]   --> src/lib.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     type OpType = fn(bool, bool) -> bool;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operation` is never used
[INFO] [stdout]   --> src/lib.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 |     enum Operation {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LexedExpr` is never constructed
[INFO] [stdout]   --> src/lib.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     struct LexedExpr {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `formula`
[INFO] [stdout]   --> src/lib.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let formula = _lex(formula);
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_formula`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/lib.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut count = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]    --> src/lib.rs:97:21
[INFO] [stdout]     |
[INFO] [stdout]  97 |                     count += 1;
[INFO] [stdout]     |                     ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 101 |                     count += 2;
[INFO] [stdout]     |                     ---------- `count` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]    --> src/lib.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |                     count += 2;
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         One(SimpleOpType),
[INFO] [stdout]    |         --- ^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 61 -         One(SimpleOpType),
[INFO] [stdout] 61 +         One(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Two(OpType)
[INFO] [stdout]    |         --- ^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 62 -         Two(OpType)
[INFO] [stdout] 62 +         Two(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `operands` and `operations` are never read
[INFO] [stdout]   --> src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     struct LexedExpr {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 66 |         operands: Vec<bool>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 67 |         operations: Vec<Operation>
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93", kill_on_drop: false }`
[INFO] [stdout] d3921c954b038ec03290476d1d2486b02861b12d8a706caba0f85306df4bab93
