[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] building fluetlang/fluet against try#b755f8b9936d084e0363ce6b393c7e444a37080e for pr-97334-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fluetlang/fluet on toolchain b755f8b9936d084e0363ce6b393c7e444a37080e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b755f8b9936d084e0363ce6b393c7e444a37080e" "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-6/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: "/workspace/cargo-home/bin/cargo" "+b755f8b9936d084e0363ce6b393c7e444a37080e" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+b755f8b9936d084e0363ce6b393c7e444a37080e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be900174e104cd7ec9959b637d743b051d0096ef7095e7725426957c9892943a
[INFO] running `Command { std: "docker" "start" "-a" "be900174e104cd7ec9959b637d743b051d0096ef7095e7725426957c9892943a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be900174e104cd7ec9959b637d743b051d0096ef7095e7725426957c9892943a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be900174e104cd7ec9959b637d743b051d0096ef7095e7725426957c9892943a", kill_on_drop: false }`
[INFO] [stdout] be900174e104cd7ec9959b637d743b051d0096ef7095e7725426957c9892943a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+b755f8b9936d084e0363ce6b393c7e444a37080e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a819a3b36848799cc19ee1527d38b8539a72235bc74dd76465145c4659eb4e08
[INFO] running `Command { std: "docker" "start" "-a" "a819a3b36848799cc19ee1527d38b8539a72235bc74dd76465145c4659eb4e08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling yansi-term v0.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling highlighting v0.1.0 (/opt/rustwide/workdir/highlighting)
[INFO] [stderr]    Compiling annotate-snippets v0.9.1
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling clap v3.0.14
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]    Compiling interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]    Compiling 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] [stderr]    Compiling resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fluet v0.1.0 (/opt/rustwide/workdir/fluet)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.09s
[INFO] running `Command { std: "docker" "inspect" "a819a3b36848799cc19ee1527d38b8539a72235bc74dd76465145c4659eb4e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a819a3b36848799cc19ee1527d38b8539a72235bc74dd76465145c4659eb4e08", kill_on_drop: false }`
[INFO] [stdout] a819a3b36848799cc19ee1527d38b8539a72235bc74dd76465145c4659eb4e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+b755f8b9936d084e0363ce6b393c7e444a37080e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d9ace3ede458f721ecac27eff5fbf721bdffe490f1efc33dc048e6481fd43dd
[INFO] running `Command { std: "docker" "start" "-a" "2d9ace3ede458f721ecac27eff5fbf721bdffe490f1efc33dc048e6481fd43dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling highlighting v0.1.0 (/opt/rustwide/workdir/highlighting)
[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] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]    Compiling interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]    Compiling resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stderr]    Compiling fluet v0.1.0 (/opt/rustwide/workdir/fluet)
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "2d9ace3ede458f721ecac27eff5fbf721bdffe490f1efc33dc048e6481fd43dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9ace3ede458f721ecac27eff5fbf721bdffe490f1efc33dc048e6481fd43dd", kill_on_drop: false }`
[INFO] [stdout] 2d9ace3ede458f721ecac27eff5fbf721bdffe490f1efc33dc048e6481fd43dd