[INFO] cloning repository https://github.com/udzura/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/udzura/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31ffa8898fef5742d4e8b1db810fba66d911b5e0
[INFO] checking udzura/rlox against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Frlox" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/udzura/rlox on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/udzura/rlox
[INFO] finished tweaking git repo https://github.com/udzura/rlox
[INFO] tweaked toml for git repo https://github.com/udzura/rlox written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/udzura/rlox 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6187ff71ebdfc93caf8720b4b2aa3b66ceb521e8f12a449f1148be3cb724271
[INFO] running `Command { std: "docker" "start" "-a" "f6187ff71ebdfc93caf8720b4b2aa3b66ceb521e8f12a449f1148be3cb724271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6187ff71ebdfc93caf8720b4b2aa3b66ceb521e8f12a449f1148be3cb724271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6187ff71ebdfc93caf8720b4b2aa3b66ceb521e8f12a449f1148be3cb724271", kill_on_drop: false }`
[INFO] [stdout] f6187ff71ebdfc93caf8720b4b2aa3b66ceb521e8f12a449f1148be3cb724271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28e9be7bf80ee8f4ea39966ccd3001434b005d633c531f335336ec472d2bd822
[INFO] running `Command { std: "docker" "start" "-a" "28e9be7bf80ee8f4ea39966ccd3001434b005d633c531f335336ec472d2bd822", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking rlox-iii v0.1.0 (/opt/rustwide/workdir/rlox-III)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rlox-ii v0.1.0 (/opt/rustwide/workdir/rlox-II)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "28e9be7bf80ee8f4ea39966ccd3001434b005d633c531f335336ec472d2bd822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e9be7bf80ee8f4ea39966ccd3001434b005d633c531f335336ec472d2bd822", kill_on_drop: false }`
[INFO] [stdout] 28e9be7bf80ee8f4ea39966ccd3001434b005d633c531f335336ec472d2bd822
[INFO] checking udzura/rlox against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Frlox" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/udzura/rlox on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/udzura/rlox
[INFO] finished tweaking git repo https://github.com/udzura/rlox
[INFO] tweaked toml for git repo https://github.com/udzura/rlox written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/udzura/rlox 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cfaf4eada1a86462160d5a337ad26bd3f6317c4ab4ac078f7690641816107a9
[INFO] running `Command { std: "docker" "start" "-a" "3cfaf4eada1a86462160d5a337ad26bd3f6317c4ab4ac078f7690641816107a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cfaf4eada1a86462160d5a337ad26bd3f6317c4ab4ac078f7690641816107a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cfaf4eada1a86462160d5a337ad26bd3f6317c4ab4ac078f7690641816107a9", kill_on_drop: false }`
[INFO] [stdout] 3cfaf4eada1a86462160d5a337ad26bd3f6317c4ab4ac078f7690641816107a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9799525a0276849319ad5bff111090d1fb3a5374c2f533de5493b5db69a52035
[INFO] running `Command { std: "docker" "start" "-a" "9799525a0276849319ad5bff111090d1fb3a5374c2f533de5493b5db69a52035", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking rlox-iii v0.1.0 (/opt/rustwide/workdir/rlox-III)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rlox-ii v0.1.0 (/opt/rustwide/workdir/rlox-II)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> rlox-II/src/interpreter.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /         if let (Number(l), Number(r)) = (left, right) {
[INFO] [stdout] 133 | |             return Ok((*l, *r));
[INFO] [stdout] 134 | |         } else {
[INFO] [stdout] 135 | |             return Err(RuntimeBreak::raise(
[INFO] [stdout] ...   |
[INFO] [stdout] 138 | |             ));
[INFO] [stdout] 139 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> rlox-II/src/interpreter.rs:353:24
[INFO] [stdout]     |
[INFO] [stdout] 353 |                   } else if let (LoxString(l), LoxString(r)) = (&left, &right) {
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 354 | |                     return Ok(LoxString(format!("{}{}", l, r)));
[INFO] [stdout] 355 | |                 } else {
[INFO] [stdout] 356 | |                     return Err(RuntimeBreak::raise(
[INFO] [stdout] ...   |
[INFO] [stdout] 359 | |                     ));
[INFO] [stdout] 360 | |                 };
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> rlox-II/src/interpreter.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /         if let (Number(l), Number(r)) = (left, right) {
[INFO] [stdout] 133 | |             return Ok((*l, *r));
[INFO] [stdout] 134 | |         } else {
[INFO] [stdout] 135 | |             return Err(RuntimeBreak::raise(
[INFO] [stdout] ...   |
[INFO] [stdout] 138 | |             ));
[INFO] [stdout] 139 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> rlox-II/src/interpreter.rs:353:24
[INFO] [stdout]     |
[INFO] [stdout] 353 |                   } else if let (LoxString(l), LoxString(r)) = (&left, &right) {
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 354 | |                     return Ok(LoxString(format!("{}{}", l, r)));
[INFO] [stdout] 355 | |                 } else {
[INFO] [stdout] 356 | |                     return Err(RuntimeBreak::raise(
[INFO] [stdout] ...   |
[INFO] [stdout] 359 | |                     ));
[INFO] [stdout] 360 | |                 };
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox-ii` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox-ii` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "9799525a0276849319ad5bff111090d1fb3a5374c2f533de5493b5db69a52035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9799525a0276849319ad5bff111090d1fb3a5374c2f533de5493b5db69a52035", kill_on_drop: false }`
[INFO] [stdout] 9799525a0276849319ad5bff111090d1fb3a5374c2f533de5493b5db69a52035