[INFO] cloning repository https://github.com/ogata-k/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/ogata-k/monkey-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fogata-k%2Fmonkey-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fogata-k%2Fmonkey-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0e520c65e14d0736d14200f0b460dea85e8c67b
[INFO] checking ogata-k/monkey-rs against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fogata-k%2Fmonkey-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ogata-k/monkey-rs on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ogata-k/monkey-rs
[INFO] finished tweaking git repo https://github.com/ogata-k/monkey-rs
[INFO] tweaked toml for git repo https://github.com/ogata-k/monkey-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ogata-k/monkey-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e468ad2167b1fc7c9fc8f77fa790d155a70db5cb3fd397f1ea68ba40d96492ff
[INFO] running `Command { std: "docker" "start" "-a" "e468ad2167b1fc7c9fc8f77fa790d155a70db5cb3fd397f1ea68ba40d96492ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e468ad2167b1fc7c9fc8f77fa790d155a70db5cb3fd397f1ea68ba40d96492ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e468ad2167b1fc7c9fc8f77fa790d155a70db5cb3fd397f1ea68ba40d96492ff", kill_on_drop: false }`
[INFO] [stdout] e468ad2167b1fc7c9fc8f77fa790d155a70db5cb3fd397f1ea68ba40d96492ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5921d294631aa1f97c4757010393e567c88da5900411ed90a2f35f28f25a1d03
[INFO] running `Command { std: "docker" "start" "-a" "5921d294631aa1f97c4757010393e567c88da5900411ed90a2f35f28f25a1d03", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking monkey-rs v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/evaluator.rs (1 fix)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parser.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         ;
[INFO] [stdout]     |         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/repl.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let tok = lexer.next_token() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tok: Option<Token> = None;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is_prefix`
[INFO] [stdout]   --> src/parser.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_prefix_precedence`
[INFO] [stdout]    --> src/parser.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/evaluator.rs (1 fix)
[INFO] [stderr]        Fixed src/parser.rs (2 fixes)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parser.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         ;
[INFO] [stdout]     |         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/repl.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let tok = lexer.next_token() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tok: Option<Token> = None;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is_prefix`
[INFO] [stdout]   --> src/parser.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_prefix_precedence`
[INFO] [stdout]    --> src/parser.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.03s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking monkey-rs v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parser.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         ;
[INFO] [stdout]     |         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parser.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         ;
[INFO] [stdout]     |         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/repl.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let tok = lexer.next_token() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tok: Option<Token> = None;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is_prefix`
[INFO] [stdout]   --> src/parser.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_prefix_precedence`
[INFO] [stdout]    --> src/parser.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/repl.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let tok = lexer.next_token() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tok: Option<Token> = None;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/evaluator.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let mut result = Object::NULL;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is_prefix`
[INFO] [stdout]   --> src/parser.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_prefix_precedence`
[INFO] [stdout]    --> src/parser.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "5921d294631aa1f97c4757010393e567c88da5900411ed90a2f35f28f25a1d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5921d294631aa1f97c4757010393e567c88da5900411ed90a2f35f28f25a1d03", kill_on_drop: false }`
[INFO] [stdout] 5921d294631aa1f97c4757010393e567c88da5900411ed90a2f35f28f25a1d03