[INFO] cloning repository https://github.com/noctuelles/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/noctuelles/ready_set_boole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoctuelles%2Fready_set_boole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoctuelles%2Fready_set_boole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d056f3b242a52728977347e2264779718de37a6
[INFO] checking noctuelles/ready_set_boole/3d056f3b242a52728977347e2264779718de37a6 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoctuelles%2Fready_set_boole" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/noctuelles/ready_set_boole on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/noctuelles/ready_set_boole
[INFO] finished tweaking git repo https://github.com/noctuelles/ready_set_boole
[INFO] tweaked toml for git repo https://github.com/noctuelles/ready_set_boole written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/noctuelles/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd1a65383c595a36413db03cb768fc8f4669102f1927a104535028e33f88675e
[INFO] running `Command { std: "docker" "start" "-a" "dd1a65383c595a36413db03cb768fc8f4669102f1927a104535028e33f88675e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd1a65383c595a36413db03cb768fc8f4669102f1927a104535028e33f88675e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1a65383c595a36413db03cb768fc8f4669102f1927a104535028e33f88675e", kill_on_drop: false }`
[INFO] [stdout] dd1a65383c595a36413db03cb768fc8f4669102f1927a104535028e33f88675e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04ff2708e5b361edbfd7199cd0e9319db002164d1f8e48dc1ea9d5f0b95484ac
[INFO] running `Command { std: "docker" "start" "-a" "04ff2708e5b361edbfd7199cd0e9319db002164d1f8e48dc1ea9d5f0b95484ac", kill_on_drop: false }`
[INFO] [stderr]     Checking ready_set_bool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]   --> src/bool_eval/ast.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fmt::format;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]   --> src/bool_eval/ast.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fmt::format;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adder` is never used
[INFO] [stdout]   --> src/adder.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn adder(a: u32, b: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `right`, and `left` are never read
[INFO] [stdout]   --> src/binary_tree/mod.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BTreeNode<T> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 15 |     pub value: T,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 16 |     pub right: Option<Box<BTreeNode<T>>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 17 |     pub left: Option<Box<BTreeNode<T>>>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bool_eval/ast.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Immediate(bool),
[INFO] [stdout]    |     --------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 21 |     Immediate(()),
[INFO] [stdout]    |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/bool_eval/ast.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Variable(char, Rc<Cell<bool>>),
[INFO] [stdout]    |     -------- ^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Variable((), ()),
[INFO] [stdout]    |              ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bool_eval/ast.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Operand(Operand),
[INFO] [stdout]    |     ------- ^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BoolEvalNodeValue` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 37 |     Operand(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bool_eval/ast.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Operator(Operator),
[INFO] [stdout]    |     -------- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BoolEvalNodeValue` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 38 |     Operator(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `root` and `variables` are never read
[INFO] [stdout]   --> src/bool_eval/ast.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ASTBoolEval {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 45 |     root: BoolEvalNode,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 46 |     variables: BoolEvalVars,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_rpn_repr`, `get_infix_repr`, `conjonctive_normal_form`, `print_truth_table`, and `eval` are never used
[INFO] [stdout]    --> src/bool_eval/ast.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl ASTBoolEval {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub fn get_rpn_repr(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn get_infix_repr(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn conjonctive_normal_form() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn print_truth_table(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     pub fn eval(&self) -> bool {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `eval`, `get_rpn_repr`, and `get_infix_repr` are never used
[INFO] [stdout]    --> src/bool_eval/ast.rs:175:12
[INFO] [stdout]     |
[INFO] [stdout] 173 | impl BoolEvalNode {
[INFO] [stdout]     | ----------------- methods in this implementation
[INFO] [stdout] 174 |     /// Evaluate the compound proposition from the current node.
[INFO] [stdout] 175 |     pub fn eval(&self) -> bool {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn get_rpn_repr(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 228 |     pub fn get_infix_repr(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/bool_eval/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 17 |     Letter(char),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 18 |     True,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 19 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 20 |     Not,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     And,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 22 |     Or,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 23 |     Xor,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 24 |     Impl,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 25 |     Equi,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `c_to_tkn` is never used
[INFO] [stdout]   --> src/bool_eval/lexer.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn c_to_tkn(c: char) -> Option<Token> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex_rpn` is never used
[INFO] [stdout]   --> src/bool_eval/lexer.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn lex_rpn(rpn_formula: &str) -> Result<Vec<Token>, String> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_formula` is never used
[INFO] [stdout]   --> src/eval_formula.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn eval_formula(formula: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gray_code` is never used
[INFO] [stdout]   --> src/gray_code.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn gray_code(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplier` is never used
[INFO] [stdout]   --> src/multiplier.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn multiplier(a: u32, b: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_truth_table` is never used
[INFO] [stdout]   --> src/truth_table.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn print_truth_table(formula: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `conjonctive_normal_form` is never used
[INFO] [stdout]    --> src/bool_eval/ast.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl ASTBoolEval {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn conjonctive_normal_form() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "04ff2708e5b361edbfd7199cd0e9319db002164d1f8e48dc1ea9d5f0b95484ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ff2708e5b361edbfd7199cd0e9319db002164d1f8e48dc1ea9d5f0b95484ac", kill_on_drop: false }`
[INFO] [stdout] 04ff2708e5b361edbfd7199cd0e9319db002164d1f8e48dc1ea9d5f0b95484ac