[INFO] cloning repository https://github.com/basic-bgnr/MyLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/basic-bgnr/MyLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasic-bgnr%2FMyLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasic-bgnr%2FMyLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e963fb316788735d8a44bdc6046a31110b28a6fe
[INFO] checking basic-bgnr/MyLang against try#ed606620234c6b50f2414162c4bbabd5f4a925f3 for pr-147995
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasic-bgnr%2FMyLang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/basic-bgnr/MyLang
[INFO] finished tweaking git repo https://github.com/basic-bgnr/MyLang
[INFO] tweaked toml for git repo https://github.com/basic-bgnr/MyLang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/basic-bgnr/MyLang on toolchain ed606620234c6b50f2414162c4bbabd5f4a925f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/basic-bgnr/MyLang 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" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "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 basic-bgnr/MyLang against try#ed606620234c6b50f2414162c4bbabd5f4a925f3 for pr-147995
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasic-bgnr%2FMyLang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/basic-bgnr/MyLang
[INFO] finished tweaking git repo https://github.com/basic-bgnr/MyLang
[INFO] tweaked toml for git repo https://github.com/basic-bgnr/MyLang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/basic-bgnr/MyLang on toolchain ed606620234c6b50f2414162c4bbabd5f4a925f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/basic-bgnr/MyLang 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" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3361fb066944f271721f28576b991c7097638cea7fdc814d0e2ce6bb659a39a
[INFO] running `Command { std: "docker" "start" "-a" "a3361fb066944f271721f28576b991c7097638cea7fdc814d0e2ce6bb659a39a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3361fb066944f271721f28576b991c7097638cea7fdc814d0e2ce6bb659a39a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3361fb066944f271721f28576b991c7097638cea7fdc814d0e2ce6bb659a39a", kill_on_drop: false }`
[INFO] [stdout] a3361fb066944f271721f28576b991c7097638cea7fdc814d0e2ce6bb659a39a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53873bf11bdfe301b4c16d32784b87bf6885fe8f57b90f910ef06067c408a426
[INFO] running `Command { std: "docker" "start" "-a" "53873bf11bdfe301b4c16d32784b87bf6885fe8f57b90f910ef06067c408a426", kill_on_drop: false }`
[INFO] [stderr]     Checking my_lang_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/main.rs:460:25
[INFO] [stdout]     |
[INFO] [stdout] 460 |             if let Some(token) = self.match_new_lines() {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/main.rs:460:25
[INFO] [stdout]     |
[INFO] [stdout] 460 |             if let Some(token) = self.match_new_lines() {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `AlphabetToken` is never constructed
[INFO] [stdout]    --> src/main.rs:159:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | enum Token {
[INFO] [stdout]     |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 159 |     AlphabetToken {
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `match_alphabet` is never used
[INFO] [stdout]    --> src/main.rs:409:8
[INFO] [stdout]     |
[INFO] [stdout] 273 | impl Tokenizer {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 409 |     fn match_alphabet(&mut self) -> Option<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PartiallyTyped` is never constructed
[INFO] [stdout]     --> src/main.rs:1373:5
[INFO] [stdout]      |
[INFO] [stdout] 1368 | enum LanguageType {
[INFO] [stdout]      |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 1373 |     PartiallyTyped,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `LanguageType` 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/main.rs:1677:33
[INFO] [stdout]      |
[INFO] [stdout] 1677 |     StructureUnimplementedError(String),
[INFO] [stdout]      |     --------------------------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1677 -     StructureUnimplementedError(String),
[INFO] [stdout] 1677 +     StructureUnimplementedError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1678:15
[INFO] [stdout]      |
[INFO] [stdout] 1678 |     TypeError(String),
[INFO] [stdout]      |     --------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1678 -     TypeError(String),
[INFO] [stdout] 1678 +     TypeError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1679:21
[INFO] [stdout]      |
[INFO] [stdout] 1679 |     IdentifierError(String),
[INFO] [stdout]      |     --------------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1679 -     IdentifierError(String),
[INFO] [stdout] 1679 +     IdentifierError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1680:17
[INFO] [stdout]      |
[INFO] [stdout] 1680 |     SyntaxError(String),
[INFO] [stdout]      |     ----------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1680 -     SyntaxError(String),
[INFO] [stdout] 1680 +     SyntaxError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `AlphabetToken` is never constructed
[INFO] [stdout]    --> src/main.rs:159:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | enum Token {
[INFO] [stdout]     |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 159 |     AlphabetToken {
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `match_alphabet` is never used
[INFO] [stdout]    --> src/main.rs:409:8
[INFO] [stdout]     |
[INFO] [stdout] 273 | impl Tokenizer {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 409 |     fn match_alphabet(&mut self) -> Option<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PartiallyTyped` is never constructed
[INFO] [stdout]     --> src/main.rs:1373:5
[INFO] [stdout]      |
[INFO] [stdout] 1368 | enum LanguageType {
[INFO] [stdout]      |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 1373 |     PartiallyTyped,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `LanguageType` 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/main.rs:1677:33
[INFO] [stdout]      |
[INFO] [stdout] 1677 |     StructureUnimplementedError(String),
[INFO] [stdout]      |     --------------------------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1677 -     StructureUnimplementedError(String),
[INFO] [stdout] 1677 +     StructureUnimplementedError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1678:15
[INFO] [stdout]      |
[INFO] [stdout] 1678 |     TypeError(String),
[INFO] [stdout]      |     --------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1678 -     TypeError(String),
[INFO] [stdout] 1678 +     TypeError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1679:21
[INFO] [stdout]      |
[INFO] [stdout] 1679 |     IdentifierError(String),
[INFO] [stdout]      |     --------------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1679 -     IdentifierError(String),
[INFO] [stdout] 1679 +     IdentifierError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1680:17
[INFO] [stdout]      |
[INFO] [stdout] 1680 |     SyntaxError(String),
[INFO] [stdout]      |     ----------- ^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ParseError` has a derived impl for the trait `Debug`, but this is 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] 1680 -     SyntaxError(String),
[INFO] [stdout] 1680 +     SyntaxError(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "53873bf11bdfe301b4c16d32784b87bf6885fe8f57b90f910ef06067c408a426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53873bf11bdfe301b4c16d32784b87bf6885fe8f57b90f910ef06067c408a426", kill_on_drop: false }`
[INFO] [stdout] 53873bf11bdfe301b4c16d32784b87bf6885fe8f57b90f910ef06067c408a426
