[INFO] cloning repository https://github.com/kbernst30/rust-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kbernst30/rust-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57caf7ed8ad05b9148838b00a5174849f67bd846
[INFO] checking kbernst30/rust-interpreter against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kbernst30/rust-interpreter
[INFO] finished tweaking git repo https://github.com/kbernst30/rust-interpreter
[INFO] tweaked toml for git repo https://github.com/kbernst30/rust-interpreter written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kbernst30/rust-interpreter on toolchain c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kbernst30/rust-interpreter 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" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d4ed89f974ff3c50f36f4184052e12a309b6487587fbbe173b63134075ff0a5
[INFO] running `Command { std: "docker" "start" "-a" "5d4ed89f974ff3c50f36f4184052e12a309b6487587fbbe173b63134075ff0a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d4ed89f974ff3c50f36f4184052e12a309b6487587fbbe173b63134075ff0a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d4ed89f974ff3c50f36f4184052e12a309b6487587fbbe173b63134075ff0a5", kill_on_drop: false }`
[INFO] [stdout] 5d4ed89f974ff3c50f36f4184052e12a309b6487587fbbe173b63134075ff0a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 430f194b5faa9179455e33e1a306117a8360e275842c61e0d95ded7ba07cf87d
[INFO] running `Command { std: "docker" "start" "-a" "430f194b5faa9179455e33e1a306117a8360e275842c61e0d95ded7ba07cf87d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::symbol::Symbol`
[INFO] [stdout]  --> src/interpreter/intr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::symbol::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::symbol::Symbol`
[INFO] [stdout]  --> src/interpreter/intr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::symbol::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             ast::Expression::Literal(literal) => self.process_literal(&literal),
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] 76 |             ast::Expression::BinaryOp(bin_op) => self.process_binary_op(&bin_op),
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] 77 |             ast::Expression::UnaryOp(un_op) => {
[INFO] [stdout]    |             ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 83 |             ast::Expression::Ident(ident) => {
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/interpreter/lexer.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(input: Peekable<Chars<'a>>) -> Lexer {
[INFO] [stdout]    |                                      ^^       ----- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(input: Peekable<Chars<'a>>) -> Lexer<'a> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             ast::Expression::Literal(literal) => self.process_literal(&literal),
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] 76 |             ast::Expression::BinaryOp(bin_op) => self.process_binary_op(&bin_op),
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] 77 |             ast::Expression::UnaryOp(un_op) => {
[INFO] [stdout]    |             ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 83 |             ast::Expression::Ident(ident) => {
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/interpreter/lexer.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(input: Peekable<Chars<'a>>) -> Lexer {
[INFO] [stdout]    |                                      ^^       ----- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(input: Peekable<Chars<'a>>) -> Lexer<'a> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "430f194b5faa9179455e33e1a306117a8360e275842c61e0d95ded7ba07cf87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "430f194b5faa9179455e33e1a306117a8360e275842c61e0d95ded7ba07cf87d", kill_on_drop: false }`
[INFO] [stdout] 430f194b5faa9179455e33e1a306117a8360e275842c61e0d95ded7ba07cf87d