[INFO] cloning repository https://github.com/Jaco26/rlox1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jaco26/rlox1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Frlox1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Frlox1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 606d613018c6b20c7db49270b7b93ba54004847c
[INFO] checking Jaco26/rlox1 against master#e08b80c0fb7667bdcd040761891701e576c42ec8 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Frlox1" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jaco26/rlox1 on toolchain e08b80c0fb7667bdcd040761891701e576c42ec8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jaco26/rlox1
[INFO] finished tweaking git repo https://github.com/Jaco26/rlox1
[INFO] tweaked toml for git repo https://github.com/Jaco26/rlox1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jaco26/rlox1 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" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Jaco26/rlox1 against try#f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Frlox1" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jaco26/rlox1 on toolchain f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jaco26/rlox1
[INFO] finished tweaking git repo https://github.com/Jaco26/rlox1
[INFO] tweaked toml for git repo https://github.com/Jaco26/rlox1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Jaco26/rlox1 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" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 156eb6f45aba4bf6d0ae1953c60f0fe75fdf435ba81e19aeafe2e284c3230d9e
[INFO] running `Command { std: "docker" "start" "-a" "156eb6f45aba4bf6d0ae1953c60f0fe75fdf435ba81e19aeafe2e284c3230d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "156eb6f45aba4bf6d0ae1953c60f0fe75fdf435ba81e19aeafe2e284c3230d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "156eb6f45aba4bf6d0ae1953c60f0fe75fdf435ba81e19aeafe2e284c3230d9e", kill_on_drop: false }`
[INFO] [stdout] 156eb6f45aba4bf6d0ae1953c60f0fe75fdf435ba81e19aeafe2e284c3230d9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c49ad8ea26e1c2dab92a52b9f02bece098e43f3396c98b8ea9f7f12c6acb8793
[INFO] running `Command { std: "docker" "start" "-a" "c49ad8ea26e1c2dab92a52b9f02bece098e43f3396c98b8ea9f7f12c6acb8793", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::util::ternary`
[INFO] [stdout]  --> src/scanner.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::util::ternary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::ternary`
[INFO] [stdout]  --> src/scanner.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::util::ternary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lexeme`, `kind`, `literal`, and `line` are never read
[INFO] [stdout]    --> src/scanner.rs:179:3
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 178 |   /// The raw substring of the source code
[INFO] [stdout] 179 |   lexeme: String,
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 |   kind: TokenKind,
[INFO] [stdout]     |   ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |   literal: Option<Literal>,
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 |   line: usize,
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lexeme`, `kind`, `literal`, and `line` are never read
[INFO] [stdout]    --> src/scanner.rs:179:3
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 178 |   /// The raw substring of the source code
[INFO] [stdout] 179 |   lexeme: String,
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 |   kind: TokenKind,
[INFO] [stdout]     |   ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |   literal: Option<Literal>,
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 |   line: usize,
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]    --> src/scanner.rs:205:10
[INFO] [stdout]     |
[INFO] [stdout] 200 | impl Token {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |   pub fn to_string(&self) -> String {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]    --> src/scanner.rs:205:10
[INFO] [stdout]     |
[INFO] [stdout] 200 | impl Token {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |   pub fn to_string(&self) -> String {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]    --> src/scanner.rs:223:3
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub enum TokenKind {
[INFO] [stdout]     |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 223 |   Identifier, Str, Number,
[INFO] [stdout]     |   ^^^^^^^^^^       ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |   And, Class, Else, False, Fun, For, If, Nil, Or,
[INFO] [stdout]     |   ^^^  ^^^^^  ^^^^  ^^^^^  ^^^  ^^^  ^^  ^^^  ^^
[INFO] [stdout] 227 |   Print, Return, Super, This, True, Var, While,
[INFO] [stdout]     |   ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TokenKind` 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: multiple variants are never constructed
[INFO] [stdout]    --> src/scanner.rs:223:3
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub enum TokenKind {
[INFO] [stdout]     |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 223 |   Identifier, Str, Number,
[INFO] [stdout]     |   ^^^^^^^^^^       ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |   And, Class, Else, False, Fun, For, If, Nil, Or,
[INFO] [stdout]     |   ^^^  ^^^^^  ^^^^  ^^^^^  ^^^  ^^^  ^^  ^^^  ^^
[INFO] [stdout] 227 |   Print, Return, Super, This, True, Var, While,
[INFO] [stdout]     |   ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TokenKind` 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: field `0` is never read
[INFO] [stdout]    --> src/scanner.rs:236:7
[INFO] [stdout]     |
[INFO] [stdout] 236 |   Str(String),
[INFO] [stdout]     |   --- ^^^^^^
[INFO] [stdout]     |   |
[INFO] [stdout]     |   field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 236 |   Str(()),
[INFO] [stdout]     |       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/scanner.rs:236:7
[INFO] [stdout]     |
[INFO] [stdout] 236 |   Str(String),
[INFO] [stdout]     |   --- ^^^^^^
[INFO] [stdout]     |   |
[INFO] [stdout]     |   field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 236 |   Str(()),
[INFO] [stdout]     |       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Number` and `Identifier` are never constructed
[INFO] [stdout]    --> src/scanner.rs:237:3
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub enum Literal {
[INFO] [stdout]     |          ------- variants in this enum
[INFO] [stdout] 236 |   Str(String),
[INFO] [stdout] 237 |   Number(f64),
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout] 238 |   Identifier(String),
[INFO] [stdout]     |   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Literal` 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: variants `Number` and `Identifier` are never constructed
[INFO] [stdout]    --> src/scanner.rs:237:3
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub enum Literal {
[INFO] [stdout]     |          ------- variants in this enum
[INFO] [stdout] 236 |   Str(String),
[INFO] [stdout] 237 |   Number(f64),
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout] 238 |   Identifier(String),
[INFO] [stdout]     |   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Literal` 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: function `ternary` is never used
[INFO] [stdout]  --> src/util.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ternary<T>(condition: bool, if_true: T, if_false: T) -> T {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ternary` is never used
[INFO] [stdout]  --> src/util.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ternary<T>(condition: bool, if_true: T, if_false: T) -> T {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c49ad8ea26e1c2dab92a52b9f02bece098e43f3396c98b8ea9f7f12c6acb8793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c49ad8ea26e1c2dab92a52b9f02bece098e43f3396c98b8ea9f7f12c6acb8793", kill_on_drop: false }`
[INFO] [stdout] c49ad8ea26e1c2dab92a52b9f02bece098e43f3396c98b8ea9f7f12c6acb8793