[INFO] cloning repository https://github.com/fluetlang/fluet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fluetlang/fluet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c129a4bb04ec56090fc5eb9026b24ca1163df51d
[INFO] checking fluetlang/fluet against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fluetlang/fluet on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fluetlang/fluet
[INFO] finished tweaking git repo https://github.com/fluetlang/fluet
[INFO] tweaked toml for git repo https://github.com/fluetlang/fluet written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fluetlang/fluet 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded annotate-snippets v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a38703083931d2752c48631f85bbe7d0250353226ef10259d53c5b812ac25844
[INFO] running `Command { std: "docker" "start" "-a" "a38703083931d2752c48631f85bbe7d0250353226ef10259d53c5b812ac25844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a38703083931d2752c48631f85bbe7d0250353226ef10259d53c5b812ac25844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38703083931d2752c48631f85bbe7d0250353226ef10259d53c5b812ac25844", kill_on_drop: false }`
[INFO] [stdout] a38703083931d2752c48631f85bbe7d0250353226ef10259d53c5b812ac25844
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f82b59b5adcdc485a221f30b7cec3f27fa6390c742277fcc92a829be073b95df
[INFO] running `Command { std: "docker" "start" "-a" "f82b59b5adcdc485a221f30b7cec3f27fa6390c742277fcc92a829be073b95df", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking annotate-snippets v0.9.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking highlighting v0.1.0 (/opt/rustwide/workdir/highlighting)
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]     Checking lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> interpreter/src/lib.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 129 | /         loop {
[INFO] [stdout] 130 | |             self.env = Rc::new(RefCell::new(Env::from_parent(self.env.clone())));
[INFO] [stdout] 131 | |
[INFO] [stdout] 132 | |             for statement in body {
[INFO] [stdout] ...   |
[INFO] [stdout] 136 | |             self.env = self.env.clone().borrow().parent().unwrap();
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 138 |
[INFO] [stdout] 139 |           Ok(())
[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]    --> interpreter/src/lib.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 129 | /         loop {
[INFO] [stdout] 130 | |             self.env = Rc::new(RefCell::new(Env::from_parent(self.env.clone())));
[INFO] [stdout] 131 | |
[INFO] [stdout] 132 | |             for statement in body {
[INFO] [stdout] ...   |
[INFO] [stdout] 136 | |             self.env = self.env.clone().borrow().parent().unwrap();
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 138 |
[INFO] [stdout] 139 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stderr]     Checking fluet v0.1.0 (/opt/rustwide/workdir/fluet)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "f82b59b5adcdc485a221f30b7cec3f27fa6390c742277fcc92a829be073b95df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82b59b5adcdc485a221f30b7cec3f27fa6390c742277fcc92a829be073b95df", kill_on_drop: false }`
[INFO] [stdout] f82b59b5adcdc485a221f30b7cec3f27fa6390c742277fcc92a829be073b95df