[INFO] cloning repository https://github.com/paulhenri/monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulhenri/monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulhenri%2Fmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulhenri%2Fmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e9ee0a694f42fd22d316478c6a0dc10639e4364
[INFO] testing paulhenri/monkey against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulhenri%2Fmonkey" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paulhenri/monkey on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulhenri/monkey
[INFO] finished tweaking git repo https://github.com/paulhenri/monkey
[INFO] tweaked toml for git repo https://github.com/paulhenri/monkey written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/paulhenri/monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e07d9c892995b14d76a8da129f9f880e68cf259028ea034087c0ef57da9c8fb9
[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" "e07d9c892995b14d76a8da129f9f880e68cf259028ea034087c0ef57da9c8fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e07d9c892995b14d76a8da129f9f880e68cf259028ea034087c0ef57da9c8fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e07d9c892995b14d76a8da129f9f880e68cf259028ea034087c0ef57da9c8fb9", kill_on_drop: false }`
[INFO] [stdout] e07d9c892995b14d76a8da129f9f880e68cf259028ea034087c0ef57da9c8fb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 65dc6bb29c10c13aeb657df82a441a4fc57622933f2371f826a54a613fba02ab
[INFO] running `Command { std: "docker" "start" "-a" "65dc6bb29c10c13aeb657df82a441a4fc57622933f2371f826a54a613fba02ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling Monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/lexer.rs:53:15
[INFO] [stdout]    |
[INFO] [stdout] 53 |         match (self.ch) {
[INFO] [stdout]    |               ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 53 -         match (self.ch) {
[INFO] [stdout] 53 +         match self.ch {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/repl.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Read, Write};
[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/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | /         match self.cur_token.tokentype {
[INFO] [stdout] 43 | |             TokenType::LET => return self.parse_let_statement(),
[INFO] [stdout] 44 | |             _ => return None,
[INFO] [stdout] 45 | |         }
[INFO] [stdout]    | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 46 | 
[INFO] [stdout] 47 |           return None;
[INFO] [stdout]    |           ^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 70 |         return Some(let_statement);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ expected enum `ast::Statement`, found struct `ast::LetStatement`
[INFO] [stdout]    |
[INFO] [stdout] help: try wrapping the expression in `ast::Statement::LET`
[INFO] [stdout]    |
[INFO] [stdout] 70 |         return Some(ast::Statement::LET(let_statement));
[INFO] [stdout]    |                     ++++++++++++++++++++             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Monkey` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "65dc6bb29c10c13aeb657df82a441a4fc57622933f2371f826a54a613fba02ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65dc6bb29c10c13aeb657df82a441a4fc57622933f2371f826a54a613fba02ab", kill_on_drop: false }`
[INFO] [stdout] 65dc6bb29c10c13aeb657df82a441a4fc57622933f2371f826a54a613fba02ab