[INFO] cloning repository https://github.com/cout970/demo-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cout970/demo-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fdemo-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fdemo-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 955c6aa87fbe9902647e9f0c2fac7bebe33e5dca
[INFO] checking cout970/demo-lang against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fdemo-lang" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cout970/demo-lang
[INFO] finished tweaking git repo https://github.com/cout970/demo-lang
[INFO] tweaked toml for git repo https://github.com/cout970/demo-lang written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cout970/demo-lang on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cout970/demo-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed76b6c1e7ec782d3cadfb27b4bb4c22d89be25d38cfbe335ad3152dccfed167
[INFO] running `Command { std: "docker" "start" "-a" "ed76b6c1e7ec782d3cadfb27b4bb4c22d89be25d38cfbe335ad3152dccfed167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed76b6c1e7ec782d3cadfb27b4bb4c22d89be25d38cfbe335ad3152dccfed167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed76b6c1e7ec782d3cadfb27b4bb4c22d89be25d38cfbe335ad3152dccfed167", kill_on_drop: false }`
[INFO] [stdout] ed76b6c1e7ec782d3cadfb27b4bb4c22d89be25d38cfbe335ad3152dccfed167
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97bf46318a8cd943d819f5a90826975333a7ca6a20beb0661a6ed1f9f58b6f1c
[INFO] running `Command { std: "docker" "start" "-a" "97bf46318a8cd943d819f5a90826975333a7ca6a20beb0661a6ed1f9f58b6f1c", kill_on_drop: false }`
[INFO] [stderr]     Checking demo_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/main.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let compiled_program = compiler.compile(program).expect("Unable to compile program");
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:17:90
[INFO] [stdout]    |
[INFO] [stdout] 17 |       pub fn compile(&mut self, program: Program) -> Result<CompiledProgram, CompileError> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 18 | |         let mut root = CompiledFunction {
[INFO] [stdout] 19 | |             args: 0,
[INFO] [stdout] 20 | |             code: vec![],
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |         })
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             self.compile_statement(&mut root, stm)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         Ok(CompiledProgram {
[INFO] [stdout] 30 | |             root_function: root,
[INFO] [stdout] 31 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `demo_lang` (bin "demo_lang") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/main.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let compiled_program = compiler.compile(program).expect("Unable to compile program");
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/main.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let compiled_program = compiler.compile(program).expect("Unable to compile program");
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:17:90
[INFO] [stdout]    |
[INFO] [stdout] 17 |       pub fn compile(&mut self, program: Program) -> Result<CompiledProgram, CompileError> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 18 | |         let mut root = CompiledFunction {
[INFO] [stdout] 19 | |             args: 0,
[INFO] [stdout] 20 | |             code: vec![],
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |         })
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             self.compile_statement(&mut root, stm)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompiledProgram, CompileError>
[INFO] [stdout]   --> src/compiler.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         Ok(CompiledProgram {
[INFO] [stdout] 30 | |             root_function: root,
[INFO] [stdout] 31 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `demo_lang` (bin "demo_lang" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "97bf46318a8cd943d819f5a90826975333a7ca6a20beb0661a6ed1f9f58b6f1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97bf46318a8cd943d819f5a90826975333a7ca6a20beb0661a6ed1f9f58b6f1c", kill_on_drop: false }`
[INFO] [stdout] 97bf46318a8cd943d819f5a90826975333a7ca6a20beb0661a6ed1f9f58b6f1c
