[INFO] updating cached repository https://github.com/bdrobinson/monkey
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e5a1b2910181c07938a6ffc12ffaeccac7f8e44
[INFO] checking bdrobinson/monkey against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdrobinson%2Fmonkey" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bdrobinson/monkey on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bdrobinson/monkey
[INFO] finished tweaking git repo https://github.com/bdrobinson/monkey
[INFO] tweaked toml for git repo https://github.com/bdrobinson/monkey written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/bdrobinson/monkey already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c9b8106fff38555c1516f8a10755a6fe046d2bbc8441a84afc8faebbe3f426c
[INFO] running `"docker" "start" "-a" "6c9b8106fff38555c1516f8a10755a6fe046d2bbc8441a84afc8faebbe3f426c"`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `precedence`
[INFO] [stderr]    --> src/parser/mod.rs:168:36
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn parse_expression(&mut self, precedence: Precedence) -> ParserResult<ast::Expression> {
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Program`
[INFO] [stderr]  --> src/ast/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Program(Program),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `PrefixParseFn`
[INFO] [stderr]   --> src/parser/mod.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | type PrefixParseFn = fn() -> ast::Expression;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `InfixParseFn`
[INFO] [stderr]   --> src/parser/mod.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | type InfixParseFn = fn(ast::Expression) -> ast::Expression;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EQUALS`
[INFO] [stderr]   --> src/parser/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     EQUALS,  // == LESSGREATER // > or <
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SUM`
[INFO] [stderr]   --> src/parser/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     SUM,     // +
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PRODUCT`
[INFO] [stderr]   --> src/parser/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     PRODUCT, // *
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CALL`
[INFO] [stderr]   --> src/parser/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CALL,    // myFunction(X)
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `precedence`
[INFO] [stderr]    --> src/parser/mod.rs:168:36
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn parse_expression(&mut self, precedence: Precedence) -> ParserResult<ast::Expression> {
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Program`
[INFO] [stderr]  --> src/ast/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Program(Program),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `PrefixParseFn`
[INFO] [stderr]   --> src/parser/mod.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | type PrefixParseFn = fn() -> ast::Expression;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `InfixParseFn`
[INFO] [stderr]   --> src/parser/mod.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | type InfixParseFn = fn(ast::Expression) -> ast::Expression;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EQUALS`
[INFO] [stderr]   --> src/parser/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     EQUALS,  // == LESSGREATER // > or <
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SUM`
[INFO] [stderr]   --> src/parser/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     SUM,     // +
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PRODUCT`
[INFO] [stderr]   --> src/parser/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     PRODUCT, // *
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CALL`
[INFO] [stderr]   --> src/parser/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CALL,    // myFunction(X)
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `"docker" "inspect" "6c9b8106fff38555c1516f8a10755a6fe046d2bbc8441a84afc8faebbe3f426c"`
[INFO] running `"docker" "rm" "-f" "6c9b8106fff38555c1516f8a10755a6fe046d2bbc8441a84afc8faebbe3f426c"`
[INFO] [stdout] 6c9b8106fff38555c1516f8a10755a6fe046d2bbc8441a84afc8faebbe3f426c