[INFO] cloning repository https://github.com/smarbo/crystal-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smarbo/crystal-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmarbo%2Fcrystal-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmarbo%2Fcrystal-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1503f032e5d1426e9a3d93a9128794141086f4d3
[INFO] checking smarbo/crystal-lang against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmarbo%2Fcrystal-lang" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/smarbo/crystal-lang
[INFO] finished tweaking git repo https://github.com/smarbo/crystal-lang
[INFO] tweaked toml for git repo https://github.com/smarbo/crystal-lang written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/smarbo/crystal-lang on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/smarbo/crystal-lang 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7426d94651f32ff76d47ba9c63b004ef2f0fcdb4694c67bfeda6b2965ccd07ae
[INFO] running `Command { std: "docker" "start" "-a" "7426d94651f32ff76d47ba9c63b004ef2f0fcdb4694c67bfeda6b2965ccd07ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7426d94651f32ff76d47ba9c63b004ef2f0fcdb4694c67bfeda6b2965ccd07ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7426d94651f32ff76d47ba9c63b004ef2f0fcdb4694c67bfeda6b2965ccd07ae", kill_on_drop: false }`
[INFO] [stdout] 7426d94651f32ff76d47ba9c63b004ef2f0fcdb4694c67bfeda6b2965ccd07ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07571afa0a7789bbb16492c40a9955f1595ad48fa34b0012d2bb85d60c2056a7
[INFO] running `Command { std: "docker" "start" "-a" "07571afa0a7789bbb16492c40a9955f1595ad48fa34b0012d2bb85d60c2056a7", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking crystal-lang v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ident`
[INFO] [stdout]   --> src/memories.rs:96:39
[INFO] [stdout]    |
[INFO] [stdout] 96 |     } else if let ASTNode::Identifier(ident) = bop {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_ident`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/main.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 |     while let token = lexer.next_token() {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/memories.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     String(String, bool),
[INFO] [stdout]    |     ------ ^^^^^^  ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Memory` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 10 -     String(String, bool),
[INFO] [stdout] 10 +     String((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `FunCall` is never constructed
[INFO] [stdout]   --> src/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum ASTNode {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     FunCall(String, Box<ASTNode>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ASTNode` 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: unused variable: `ident`
[INFO] [stdout]   --> src/memories.rs:96:39
[INFO] [stdout]    |
[INFO] [stdout] 96 |     } else if let ASTNode::Identifier(ident) = bop {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_ident`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/main.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 |     while let token = lexer.next_token() {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/memories.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     String(String, bool),
[INFO] [stdout]    |     ------ ^^^^^^  ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Memory` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 10 -     String(String, bool),
[INFO] [stdout] 10 +     String((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `FunCall` is never constructed
[INFO] [stdout]   --> src/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum ASTNode {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     FunCall(String, Box<ASTNode>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ASTNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "07571afa0a7789bbb16492c40a9955f1595ad48fa34b0012d2bb85d60c2056a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07571afa0a7789bbb16492c40a9955f1595ad48fa34b0012d2bb85d60c2056a7", kill_on_drop: false }`
[INFO] [stdout] 07571afa0a7789bbb16492c40a9955f1595ad48fa34b0012d2bb85d60c2056a7
