[INFO] cloning repository https://github.com/elsueter/c_compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elsueter/c_compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsueter%2Fc_compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsueter%2Fc_compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acee76c91b4fd0f254efbca2bd854f261d1fa29d
[INFO] checking elsueter/c_compiler against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsueter%2Fc_compiler" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/elsueter/c_compiler
[INFO] finished tweaking git repo https://github.com/elsueter/c_compiler
[INFO] tweaked toml for git repo https://github.com/elsueter/c_compiler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/elsueter/c_compiler on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/elsueter/c_compiler 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0132a2691910138f0c73b1276fda902646162c95bb4540b1470c93cdbdc6807f
[INFO] running `Command { std: "docker" "start" "-a" "0132a2691910138f0c73b1276fda902646162c95bb4540b1470c93cdbdc6807f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0132a2691910138f0c73b1276fda902646162c95bb4540b1470c93cdbdc6807f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0132a2691910138f0c73b1276fda902646162c95bb4540b1470c93cdbdc6807f", kill_on_drop: false }`
[INFO] [stdout] 0132a2691910138f0c73b1276fda902646162c95bb4540b1470c93cdbdc6807f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27ca290159be74781c8a674bd88fb6f34c1e4da7a680f6da742bf19a56c884f2
[INFO] running `Command { std: "docker" "start" "-a" "27ca290159be74781c8a674bd88fb6f34c1e4da7a680f6da742bf19a56c884f2", kill_on_drop: false }`
[INFO] [stderr]     Checking C-Compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ast.rs:432:9
[INFO] [stdout]     |
[INFO] [stdout] 432 |     let mut output: Vec<Statement> = vec![];
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> src/ast.rs:461:9
[INFO] [stdout]     |
[INFO] [stdout] 461 |     let ast = run_parser(tokens);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ts` and `id` are never read
[INFO] [stdout]    --> src/ast.rs:151:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | struct Parameter {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] 151 |     ts: Type,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 152 |     id: Identifier,
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Identifier`, `PostOperator`, `PreOperator`, and `Full` are never constructed
[INFO] [stdout]    --> src/ast.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | enum Expression {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 158 |     Identifier(Identifier),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 159 |     PostOperator {
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |     PreOperator {
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     Full {
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Expression`, `FunctionProto`, and `Function` are never constructed
[INFO] [stdout]    --> src/ast.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 176 | enum Statement {
[INFO] [stdout]     |      --------- variants in this enum
[INFO] [stdout] 177 |     Expression(Expression),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 178 |     FunctionProto {
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     Function {
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ast.rs:432:9
[INFO] [stdout]     |
[INFO] [stdout] 432 |     let mut output: Vec<Statement> = vec![];
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> src/ast.rs:461:9
[INFO] [stdout]     |
[INFO] [stdout] 461 |     let ast = run_parser(tokens);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ts` and `id` are never read
[INFO] [stdout]    --> src/ast.rs:151:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | struct Parameter {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] 151 |     ts: Type,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 152 |     id: Identifier,
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Identifier`, `PostOperator`, `PreOperator`, and `Full` are never constructed
[INFO] [stdout]    --> src/ast.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | enum Expression {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 158 |     Identifier(Identifier),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 159 |     PostOperator {
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |     PreOperator {
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     Full {
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Expression`, `FunctionProto`, and `Function` are never constructed
[INFO] [stdout]    --> src/ast.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 176 | enum Statement {
[INFO] [stdout]     |      --------- variants in this enum
[INFO] [stdout] 177 |     Expression(Expression),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 178 |     FunctionProto {
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     Function {
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "27ca290159be74781c8a674bd88fb6f34c1e4da7a680f6da742bf19a56c884f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ca290159be74781c8a674bd88fb6f34c1e4da7a680f6da742bf19a56c884f2", kill_on_drop: false }`
[INFO] [stdout] 27ca290159be74781c8a674bd88fb6f34c1e4da7a680f6da742bf19a56c884f2