[INFO] cloning repository https://github.com/undefinednpc/loxrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/undefinednpc/loxrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundefinednpc%2Floxrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundefinednpc%2Floxrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58fce448084b8b33ba7d0a8eddc70e862849a4a8
[INFO] checking undefinednpc/loxrs against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundefinednpc%2Floxrs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/undefinednpc/loxrs
[INFO] finished tweaking git repo https://github.com/undefinednpc/loxrs
[INFO] tweaked toml for git repo https://github.com/undefinednpc/loxrs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/undefinednpc/loxrs on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/undefinednpc/loxrs 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" "+f70ee28831acc074c109afab32d287057c3eca46" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking undefinednpc/loxrs against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundefinednpc%2Floxrs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/undefinednpc/loxrs
[INFO] finished tweaking git repo https://github.com/undefinednpc/loxrs
[INFO] tweaked toml for git repo https://github.com/undefinednpc/loxrs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/undefinednpc/loxrs on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/undefinednpc/loxrs 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" "+f70ee28831acc074c109afab32d287057c3eca46" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e39118b59b228c83e1cbf77f977a63f63160ad8dc22330c2dacbfe36ad239ec
[INFO] running `Command { std: "docker" "start" "-a" "3e39118b59b228c83e1cbf77f977a63f63160ad8dc22330c2dacbfe36ad239ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e39118b59b228c83e1cbf77f977a63f63160ad8dc22330c2dacbfe36ad239ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e39118b59b228c83e1cbf77f977a63f63160ad8dc22330c2dacbfe36ad239ec", kill_on_drop: false }`
[INFO] [stdout] 3e39118b59b228c83e1cbf77f977a63f63160ad8dc22330c2dacbfe36ad239ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 011d16bb37b8b9f389cbcd6430b166ed0c1dfeadc88d3941b15f71e0fe2898a2
[INFO] running `Command { std: "docker" "start" "-a" "011d16bb37b8b9f389cbcd6430b166ed0c1dfeadc88d3941b15f71e0fe2898a2", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut start: usize = 0;
[INFO] [stdout]   |             ----^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut start: usize = 0;
[INFO] [stdout]   |             ----^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut current: usize = 0;
[INFO] [stdout]   |             ----^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut current: usize = 0;
[INFO] [stdout]   |             ----^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut line: usize = 1;
[INFO] [stdout]   |             ----^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/scanner/scanner.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut line: usize = 1;
[INFO] [stdout]   |             ----^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]  --> src/scanner/scanner.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut start: usize = 0;
[INFO] [stdout]   |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]  --> src/scanner/scanner.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut start: usize = 0;
[INFO] [stdout]   |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]  --> src/scanner/scanner.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut current: usize = 0;
[INFO] [stdout]   |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]  --> src/scanner/scanner.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut current: usize = 0;
[INFO] [stdout]   |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/scanner/tokentype.rs:3:37
[INFO] [stdout]    |
[INFO] [stdout]  2 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout]  3 |   LeftParen, RightParen, LeftBrace, RightBrace,
[INFO] [stdout]    |                                     ^^^^^^^^^^
[INFO] [stdout]  4 |   Comma, Dot, Minus, Plus, Semicolon, Slash, Star,
[INFO] [stdout]    |                                       ^^^^^
[INFO] [stdout]  5 |
[INFO] [stdout]  6 |   Bang, BangEqual,
[INFO] [stdout]    |   ^^^^  ^^^^^^^^^
[INFO] [stdout]  7 |   Equal, EqualEqual,
[INFO] [stdout]    |   ^^^^^  ^^^^^^^^^^
[INFO] [stdout]  8 |   Greater, GreaterEqual,
[INFO] [stdout]    |   ^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]  9 |   Less, LessEqual,
[INFO] [stdout]    |   ^^^^  ^^^^^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |   Identifier, String, Number,
[INFO] [stdout]    |   ^^^^^^^^^^  ^^^^^^  ^^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |   And, Class, Else, False, Fun, For, If, Null, Or,
[INFO] [stdout]    |   ^^^  ^^^^^  ^^^^  ^^^^^  ^^^  ^^^  ^^  ^^^^  ^^
[INFO] [stdout] 14 |   Print, Return, Super, This, True, Var, While,
[INFO] [stdout]    |   ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 |   Eof
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tokentype`, `lexeme`, and `line` are never read
[INFO] [stdout]  --> src/scanner/token.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     tokentype: TokenType,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     lexeme: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 7 |     line: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/scanner/tokentype.rs:3:37
[INFO] [stdout]    |
[INFO] [stdout]  2 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout]  3 |   LeftParen, RightParen, LeftBrace, RightBrace,
[INFO] [stdout]    |                                     ^^^^^^^^^^
[INFO] [stdout]  4 |   Comma, Dot, Minus, Plus, Semicolon, Slash, Star,
[INFO] [stdout]    |                                       ^^^^^
[INFO] [stdout]  5 |
[INFO] [stdout]  6 |   Bang, BangEqual,
[INFO] [stdout]    |   ^^^^  ^^^^^^^^^
[INFO] [stdout]  7 |   Equal, EqualEqual,
[INFO] [stdout]    |   ^^^^^  ^^^^^^^^^^
[INFO] [stdout]  8 |   Greater, GreaterEqual,
[INFO] [stdout]    |   ^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]  9 |   Less, LessEqual,
[INFO] [stdout]    |   ^^^^  ^^^^^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |   Identifier, String, Number,
[INFO] [stdout]    |   ^^^^^^^^^^  ^^^^^^  ^^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |   And, Class, Else, False, Fun, For, If, Null, Or,
[INFO] [stdout]    |   ^^^  ^^^^^  ^^^^  ^^^^^  ^^^  ^^^  ^^  ^^^^  ^^
[INFO] [stdout] 14 |   Print, Return, Super, This, True, Var, While,
[INFO] [stdout]    |   ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 |   Eof
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tokentype`, `lexeme`, and `line` are never read
[INFO] [stdout]  --> src/scanner/token.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     tokentype: TokenType,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     lexeme: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 7 |     line: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "011d16bb37b8b9f389cbcd6430b166ed0c1dfeadc88d3941b15f71e0fe2898a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011d16bb37b8b9f389cbcd6430b166ed0c1dfeadc88d3941b15f71e0fe2898a2", kill_on_drop: false }`
[INFO] [stdout] 011d16bb37b8b9f389cbcd6430b166ed0c1dfeadc88d3941b15f71e0fe2898a2
