[INFO] cloning repository https://github.com/firdausyusofs/FLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/firdausyusofs/FLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirdausyusofs%2FFLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirdausyusofs%2FFLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76e9c10f3455c9b444c34ef89d90f4fe0afd17dd
[INFO] building firdausyusofs/FLang against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirdausyusofs%2FFLang" "/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/firdausyusofs/FLang on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/firdausyusofs/FLang
[INFO] finished tweaking git repo https://github.com/firdausyusofs/FLang
[INFO] tweaked toml for git repo https://github.com/firdausyusofs/FLang written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/firdausyusofs/FLang 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0734599ce6e25721c03b8026ecc32ff0513c2ff63392af10f9bdb88456a1ac59
[INFO] running `Command { std: "docker" "start" "-a" "0734599ce6e25721c03b8026ecc32ff0513c2ff63392af10f9bdb88456a1ac59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0734599ce6e25721c03b8026ecc32ff0513c2ff63392af10f9bdb88456a1ac59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0734599ce6e25721c03b8026ecc32ff0513c2ff63392af10f9bdb88456a1ac59", kill_on_drop: false }`
[INFO] [stdout] 0734599ce6e25721c03b8026ecc32ff0513c2ff63392af10f9bdb88456a1ac59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 432f81f8ae4757da8f601a9c1d659f7d5c63e6dac7c1966de13023e5d5b61ca9
[INFO] running `Command { std: "docker" "start" "-a" "432f81f8ae4757da8f601a9c1d659f7d5c63e6dac7c1966de13023e5d5b61ca9", kill_on_drop: false }`
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling flang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/checker/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/checker/mod.rs:75:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |               span: todo!(),
[INFO] [stdout]    |                     ------- any code following this expression is unreachable
[INFO] [stdout] 75 |               stmts: program
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 76 | |                 .0
[INFO] [stdout] 77 | |                 .iter()
[INFO] [stdout] 78 | |                 .map(|s| self.check_expression_statement(s))
[INFO] [stdout] 79 | |                 .collect(),
[INFO] [stdout]    | |__________________________^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/checker/mod.rs:89:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |             span: todo!(),
[INFO] [stdout]    |                   ------- any code following this expression is unreachable
[INFO] [stdout] 89 |             expr: self.check_expression(&stmt.expr),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program`
[INFO] [stdout]   --> src/checker/mod.rs:72:33
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn check_program(&mut self, program: &Program) -> CheckedProgram {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/checker/mod.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         stmt: &ExpressionStatement,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "432f81f8ae4757da8f601a9c1d659f7d5c63e6dac7c1966de13023e5d5b61ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432f81f8ae4757da8f601a9c1d659f7d5c63e6dac7c1966de13023e5d5b61ca9", kill_on_drop: false }`
[INFO] [stdout] 432f81f8ae4757da8f601a9c1d659f7d5c63e6dac7c1966de13023e5d5b61ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/5e588077e6ff2e014ad52d42cd17158f5ba4550be8e0cebc0b2574b753068f13/work: no space left on device