[INFO] cloning repository https://github.com/noj/monkey.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noj/monkey.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoj%2Fmonkey.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoj%2Fmonkey.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09484a3d0d007a47ca1eeeae6143ebdbc275b9aa
[INFO] testing noj/monkey.rs against try#0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6 for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoj%2Fmonkey.rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noj/monkey.rs
[INFO] finished tweaking git repo https://github.com/noj/monkey.rs
[INFO] tweaked toml for git repo https://github.com/noj/monkey.rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noj/monkey.rs on toolchain 0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noj/monkey.rs 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" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] testing noj/monkey.rs against try#0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6 for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoj%2Fmonkey.rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noj/monkey.rs
[INFO] finished tweaking git repo https://github.com/noj/monkey.rs
[INFO] tweaked toml for git repo https://github.com/noj/monkey.rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noj/monkey.rs on toolchain 0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noj/monkey.rs 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" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3eb5fcd2e9e13e08a8ff68424a468487b7252d0e1cea030013c75e11cf84cee
[INFO] running `Command { std: "docker" "start" "-a" "b3eb5fcd2e9e13e08a8ff68424a468487b7252d0e1cea030013c75e11cf84cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3eb5fcd2e9e13e08a8ff68424a468487b7252d0e1cea030013c75e11cf84cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3eb5fcd2e9e13e08a8ff68424a468487b7252d0e1cea030013c75e11cf84cee", kill_on_drop: false }`
[INFO] [stdout] b3eb5fcd2e9e13e08a8ff68424a468487b7252d0e1cea030013c75e11cf84cee
[INFO] testing noj/monkey.rs against try#0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6 for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoj%2Fmonkey.rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noj/monkey.rs
[INFO] finished tweaking git repo https://github.com/noj/monkey.rs
[INFO] tweaked toml for git repo https://github.com/noj/monkey.rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noj/monkey.rs on toolchain 0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noj/monkey.rs 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" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7556e01fdf1899e6ca8713390a4cd9ab5e66e608dc95fab5db07136ed849bbab
[INFO] running `Command { std: "docker" "start" "-a" "7556e01fdf1899e6ca8713390a4cd9ab5e66e608dc95fab5db07136ed849bbab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7556e01fdf1899e6ca8713390a4cd9ab5e66e608dc95fab5db07136ed849bbab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7556e01fdf1899e6ca8713390a4cd9ab5e66e608dc95fab5db07136ed849bbab", kill_on_drop: false }`
[INFO] [stdout] 7556e01fdf1899e6ca8713390a4cd9ab5e66e608dc95fab5db07136ed849bbab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e02fce9f6c1d7fe7c7b5ff05d3e1b4e1ec8621a65ee24062367c86cc4afe1826
[INFO] running `Command { std: "docker" "start" "-a" "e02fce9f6c1d7fe7c7b5ff05d3e1b4e1ec8621a65ee24062367c86cc4afe1826", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ast::*`
[INFO] [stdout]  --> src/parser/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use ast::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/repl/mod.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, BufRead, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Parser<'a>` is more private than the item `new_parser`
[INFO] [stdout]   --> src/parser/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `new_parser` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Parser<'a>` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/parser/mod.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]  --> src/parser/mod.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum ParseError {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_parser` is never used
[INFO] [stdout]   --> src/parser/mod.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `precedence` is never used
[INFO] [stdout]   --> src/parser/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn precedence(token: Token) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse_program` is never used
[INFO] [stdout]   --> src/parser/mod.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- associated function in this implementation
[INFO] [stdout] 53 |     pub fn parse_program() -> Result<(), ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Statement` is never used
[INFO] [stdout]  --> src/parser/ast.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Statement {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]  --> src/parser/ast.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Expression {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/parser/ast.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Program {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer/mod.rs:61:23
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]    |                       ^^^^^^^^^     ----- the lifetime gets resolved as `'_`
[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 remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn next_token(&mut self) -> Token<'_> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "e02fce9f6c1d7fe7c7b5ff05d3e1b4e1ec8621a65ee24062367c86cc4afe1826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e02fce9f6c1d7fe7c7b5ff05d3e1b4e1ec8621a65ee24062367c86cc4afe1826", kill_on_drop: false }`
[INFO] [stdout] e02fce9f6c1d7fe7c7b5ff05d3e1b4e1ec8621a65ee24062367c86cc4afe1826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d59fea6d9f45b3b1d2503b2f83714d074ce9263c7e7b88b14f1073fd5f49151c
[INFO] running `Command { std: "docker" "start" "-a" "d59fea6d9f45b3b1d2503b2f83714d074ce9263c7e7b88b14f1073fd5f49151c", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ast::*`
[INFO] [stdout]  --> src/parser/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use ast::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/repl/mod.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, BufRead, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Parser<'a>` is more private than the item `new_parser`
[INFO] [stdout]   --> src/parser/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `new_parser` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Parser<'a>` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/parser/mod.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]  --> src/parser/mod.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum ParseError {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_parser` is never used
[INFO] [stdout]   --> src/parser/mod.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `precedence` is never used
[INFO] [stdout]   --> src/parser/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn precedence(token: Token) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse_program` is never used
[INFO] [stdout]   --> src/parser/mod.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- associated function in this implementation
[INFO] [stdout] 53 |     pub fn parse_program() -> Result<(), ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Statement` is never used
[INFO] [stdout]  --> src/parser/ast.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Statement {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]  --> src/parser/ast.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Expression {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/parser/ast.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Program {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer/mod.rs:61:23
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]    |                       ^^^^^^^^^     ----- the lifetime gets resolved as `'_`
[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 remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn next_token(&mut self) -> Token<'_> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "d59fea6d9f45b3b1d2503b2f83714d074ce9263c7e7b88b14f1073fd5f49151c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d59fea6d9f45b3b1d2503b2f83714d074ce9263c7e7b88b14f1073fd5f49151c", kill_on_drop: false }`
[INFO] [stdout] d59fea6d9f45b3b1d2503b2f83714d074ce9263c7e7b88b14f1073fd5f49151c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0936b3db0ae648ba2d5b60eb08cf4faf2ddab0c6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9495eb611d53eb5b90d915b9454ba0560f6f62ef4f53941fc4819924fbf20c9d
[INFO] running `Command { std: "docker" "start" "-a" "9495eb611d53eb5b90d915b9454ba0560f6f62ef4f53941fc4819924fbf20c9d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ast::*`
[INFO] [stderr]  --> src/parser/mod.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub use ast::*;
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/repl/mod.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, BufRead, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `Parser<'a>` is more private than the item `new_parser`
[INFO] [stderr]   --> src/parser/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `new_parser` is reachable at visibility `pub(crate)`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `Parser<'a>` is only usable at visibility `pub(self)`
[INFO] [stderr]   --> src/parser/mod.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Parser<'a> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ParseError` is never used
[INFO] [stderr]  --> src/parser/mod.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum ParseError {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Parser` is never constructed
[INFO] [stderr]   --> src/parser/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Parser<'a> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `new_parser` is never used
[INFO] [stderr]   --> src/parser/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn new_parser<'a>(input: &'a str) -> Parser<'a> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `precedence` is never used
[INFO] [stderr]   --> src/parser/mod.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn precedence(token: Token) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `parse_program` is never used
[INFO] [stderr]   --> src/parser/mod.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 52 | impl<'a> Parser<'a> {
[INFO] [stderr]    | ------------------- associated function in this implementation
[INFO] [stderr] 53 |     pub fn parse_program() -> Result<(), ParseError> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Statement` is never used
[INFO] [stderr]  --> src/parser/ast.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Statement {
[INFO] [stderr]   |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Expression` is never used
[INFO] [stderr]  --> src/parser/ast.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 | enum Expression {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Program` is never constructed
[INFO] [stderr]   --> src/parser/ast.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | struct Program {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/lexer/mod.rs:61:23
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn next_token(&mut self) -> Token {
[INFO] [stderr]    |                       ^^^^^^^^^     ----- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn next_token(&mut self) -> Token<'_> {
[INFO] [stderr]    |                                          ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `monkey` (bin "monkey" test) generated 12 warnings (run `cargo fix --bin "monkey" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/monkey-9f6ae58d337b3407)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test lexer::test_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9495eb611d53eb5b90d915b9454ba0560f6f62ef4f53941fc4819924fbf20c9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9495eb611d53eb5b90d915b9454ba0560f6f62ef4f53941fc4819924fbf20c9d", kill_on_drop: false }`
[INFO] [stdout] 9495eb611d53eb5b90d915b9454ba0560f6f62ef4f53941fc4819924fbf20c9d