[INFO] cloning repository https://github.com/piotr-domagalski/rustmonkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/piotr-domagalski/rustmonkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotr-domagalski%2Frustmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotr-domagalski%2Frustmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 223dc91443f4978e0fdda0546fd75024d8b25569
[INFO] checking piotr-domagalski/rustmonkey against try#c86ec274072509d26d0ee52682a0c94ed012ed89 for pr-153027
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotr-domagalski%2Frustmonkey" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/piotr-domagalski/rustmonkey
[INFO] finished tweaking git repo https://github.com/piotr-domagalski/rustmonkey
[INFO] tweaked toml for git repo https://github.com/piotr-domagalski/rustmonkey written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/piotr-domagalski/rustmonkey on toolchain c86ec274072509d26d0ee52682a0c94ed012ed89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/piotr-domagalski/rustmonkey 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" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc82569004a5b1f2d46ced073e1bb7b671faeed4f0eb0a7023c8c8ffa5738343
[INFO] running `Command { std: "docker" "start" "-a" "bc82569004a5b1f2d46ced073e1bb7b671faeed4f0eb0a7023c8c8ffa5738343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc82569004a5b1f2d46ced073e1bb7b671faeed4f0eb0a7023c8c8ffa5738343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc82569004a5b1f2d46ced073e1bb7b671faeed4f0eb0a7023c8c8ffa5738343", kill_on_drop: false }`
[INFO] [stdout] bc82569004a5b1f2d46ced073e1bb7b671faeed4f0eb0a7023c8c8ffa5738343
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 455ba34a7109d79db5c6e5ef8e878ad14f1a7f7dbd7dc589a6f2443628c20459
[INFO] running `Command { std: "docker" "start" "-a" "455ba34a7109d79db5c6e5ef8e878ad14f1a7f7dbd7dc589a6f2443628c20459", kill_on_drop: false }`
[INFO] [stderr]     Checking text_io v0.1.12
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `precedence` is never used
[INFO] [stdout]   --> src/ast/expression/operators.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl PrefixOperator {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 17 |     pub fn precedence(&self) -> Precedence {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Call` is never constructed
[INFO] [stdout]    --> src/ast/expression/operators.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub enum Precedence{
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 116 |     Call,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Precedence` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parsing/lexer.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(s: &str) -> Lexer {
[INFO] [stdout]    |                   ^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(s: &str) -> Lexer<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `precedence` is never used
[INFO] [stdout]   --> src/ast/expression/operators.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl PrefixOperator {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 17 |     pub fn precedence(&self) -> Precedence {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parsing/lexer.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(s: &str) -> Lexer {
[INFO] [stdout]    |                   ^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(s: &str) -> Lexer<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "455ba34a7109d79db5c6e5ef8e878ad14f1a7f7dbd7dc589a6f2443628c20459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455ba34a7109d79db5c6e5ef8e878ad14f1a7f7dbd7dc589a6f2443628c20459", kill_on_drop: false }`
[INFO] [stdout] 455ba34a7109d79db5c6e5ef8e878ad14f1a7f7dbd7dc589a6f2443628c20459