[INFO] cloning repository https://github.com/MonkeyToiletLadder/oscar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MonkeyToiletLadder/oscar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyToiletLadder%2Foscar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyToiletLadder%2Foscar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfea18051a68f028a42be7a3bc86d816c9606956
[INFO] testing MonkeyToiletLadder/oscar against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyToiletLadder%2Foscar" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MonkeyToiletLadder/oscar on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MonkeyToiletLadder/oscar
[INFO] finished tweaking git repo https://github.com/MonkeyToiletLadder/oscar
[INFO] tweaked toml for git repo https://github.com/MonkeyToiletLadder/oscar written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/MonkeyToiletLadder/oscar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 500eb14a5435a8d2cab88ca86e344c5277fb43c9294c84fdef42549f39795437
[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" "500eb14a5435a8d2cab88ca86e344c5277fb43c9294c84fdef42549f39795437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "500eb14a5435a8d2cab88ca86e344c5277fb43c9294c84fdef42549f39795437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "500eb14a5435a8d2cab88ca86e344c5277fb43c9294c84fdef42549f39795437", kill_on_drop: false }`
[INFO] [stdout] 500eb14a5435a8d2cab88ca86e344c5277fb43c9294c84fdef42549f39795437
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b351857ddd0ea2ddc71b8f58e31e5a58800d4f82c1670ca67454ea001c34d372
[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" "b351857ddd0ea2ddc71b8f58e31e5a58800d4f82c1670ca67454ea001c34d372", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling oscar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parser::Parser`
[INFO] [stdout]  --> src/grover/evaluator.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use parser::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/grover/token.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 186 | /         match character {
[INFO] [stdout] 187 | |             // Variables
[INFO] [stdout] 188 | |             '$' => {
[INFO] [stdout] 189 | |                 let mut identifier = String::from("$");
[INFO] [stdout] ...   |
[INFO] [stdout] 322 | |             }
[INFO] [stdout] 323 | |         };
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 324 |           // No Characters Found
[INFO] [stdout] 325 |           self.state(TokenIterator::END);
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ans`
[INFO] [stdout]   --> src/grover/evaluator.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let ans = 0f64;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ans`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/grover/token.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let mut character: char = match self.chars.next() {
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut lexer = grover::TokenIterator::new("(5   +4) * 2", 10);
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `good`
[INFO] [stdout]    --> src/grover/token.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn good(&self) -> bool {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `end`
[INFO] [stdout]    --> src/grover/token.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn end(&self) -> bool {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "b351857ddd0ea2ddc71b8f58e31e5a58800d4f82c1670ca67454ea001c34d372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b351857ddd0ea2ddc71b8f58e31e5a58800d4f82c1670ca67454ea001c34d372", kill_on_drop: false }`
[INFO] [stdout] b351857ddd0ea2ddc71b8f58e31e5a58800d4f82c1670ca67454ea001c34d372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff141ac2407ef9e1e6896d5554e6a7c3bba8942b1fbe1655a103f7282e28ba73
[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" "ff141ac2407ef9e1e6896d5554e6a7c3bba8942b1fbe1655a103f7282e28ba73", kill_on_drop: false }`
[INFO] [stderr]    Compiling oscar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parser::Parser`
[INFO] [stdout]  --> src/grover/evaluator.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use parser::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/grover/token.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 186 | /         match character {
[INFO] [stdout] 187 | |             // Variables
[INFO] [stdout] 188 | |             '$' => {
[INFO] [stdout] 189 | |                 let mut identifier = String::from("$");
[INFO] [stdout] ...   |
[INFO] [stdout] 322 | |             }
[INFO] [stdout] 323 | |         };
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 324 |           // No Characters Found
[INFO] [stdout] 325 |           self.state(TokenIterator::END);
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ans`
[INFO] [stdout]   --> src/grover/evaluator.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let ans = 0f64;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ans`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/grover/token.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let mut character: char = match self.chars.next() {
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut lexer = grover::TokenIterator::new("(5   +4) * 2", 10);
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `good`
[INFO] [stdout]    --> src/grover/token.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn good(&self) -> bool {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `end`
[INFO] [stdout]    --> src/grover/token.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn end(&self) -> bool {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "ff141ac2407ef9e1e6896d5554e6a7c3bba8942b1fbe1655a103f7282e28ba73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff141ac2407ef9e1e6896d5554e6a7c3bba8942b1fbe1655a103f7282e28ba73", kill_on_drop: false }`
[INFO] [stdout] ff141ac2407ef9e1e6896d5554e6a7c3bba8942b1fbe1655a103f7282e28ba73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 17aedfc2ea5f059893e6021bb4f9387bb27155ef78b831d999edc1e839abf7dc
[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" "17aedfc2ea5f059893e6021bb4f9387bb27155ef78b831d999edc1e839abf7dc", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `parser::Parser`
[INFO] [stderr]  --> src/grover/evaluator.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use parser::Parser;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/grover/token.rs:325:9
[INFO] [stderr]     |
[INFO] [stderr] 186 | /         match character {
[INFO] [stderr] 187 | |             // Variables
[INFO] [stderr] 188 | |             '$' => {
[INFO] [stderr] 189 | |                 let mut identifier = String::from("$");
[INFO] [stderr] ...   |
[INFO] [stderr] 322 | |             }
[INFO] [stderr] 323 | |         };
[INFO] [stderr]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 324 |           // No Characters Found
[INFO] [stderr] 325 |           self.state(TokenIterator::END);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ans`
[INFO] [stderr]   --> src/grover/evaluator.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let ans = 0f64;
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ans`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/grover/token.rs:179:13
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let mut character: char = match self.chars.next() {
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut lexer = grover::TokenIterator::new("(5   +4) * 2", 10);
[INFO] [stderr]   |         ----^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `good`
[INFO] [stderr]    --> src/grover/token.rs:152:12
[INFO] [stderr]     |
[INFO] [stderr] 152 |     pub fn good(&self) -> bool {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `end`
[INFO] [stderr]    --> src/grover/token.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn end(&self) -> bool {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `oscar` (bin "oscar" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/oscar-8089dc381ed6e746)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "17aedfc2ea5f059893e6021bb4f9387bb27155ef78b831d999edc1e839abf7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17aedfc2ea5f059893e6021bb4f9387bb27155ef78b831d999edc1e839abf7dc", kill_on_drop: false }`
[INFO] [stdout] 17aedfc2ea5f059893e6021bb4f9387bb27155ef78b831d999edc1e839abf7dc