[INFO] cloning repository https://github.com/benevolent-games/lem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benevolent-games/lem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenevolent-games%2Flem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenevolent-games%2Flem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cab84d52e2d87aaa8471c424027c4c3dffa20f44
[INFO] checking benevolent-games/lem against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenevolent-games%2Flem" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benevolent-games/lem 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/benevolent-games/lem
[INFO] finished tweaking git repo https://github.com/benevolent-games/lem
[INFO] tweaked toml for git repo https://github.com/benevolent-games/lem written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/benevolent-games/lem 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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c444e51f89a44cdde994e9f8ec40a17d94743c3cc0363031a609725a7d07cfc1
[INFO] running `Command { std: "docker" "start" "-a" "c444e51f89a44cdde994e9f8ec40a17d94743c3cc0363031a609725a7d07cfc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c444e51f89a44cdde994e9f8ec40a17d94743c3cc0363031a609725a7d07cfc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c444e51f89a44cdde994e9f8ec40a17d94743c3cc0363031a609725a7d07cfc1", kill_on_drop: false }`
[INFO] [stdout] c444e51f89a44cdde994e9f8ec40a17d94743c3cc0363031a609725a7d07cfc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7f97c1e7ab8a6caecd0a30eec1d88d84dcb41e6f9551de9edde6f99aa1d9f66c
[INFO] running `Command { std: "docker" "start" "-a" "7f97c1e7ab8a6caecd0a30eec1d88d84dcb41e6f9551de9edde6f99aa1d9f66c", kill_on_drop: false }`
[INFO] [stderr]     Checking lem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "7f97c1e7ab8a6caecd0a30eec1d88d84dcb41e6f9551de9edde6f99aa1d9f66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f97c1e7ab8a6caecd0a30eec1d88d84dcb41e6f9551de9edde6f99aa1d9f66c", kill_on_drop: false }`
[INFO] [stdout] 7f97c1e7ab8a6caecd0a30eec1d88d84dcb41e6f9551de9edde6f99aa1d9f66c
[INFO] checking benevolent-games/lem against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenevolent-games%2Flem" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benevolent-games/lem 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/benevolent-games/lem
[INFO] finished tweaking git repo https://github.com/benevolent-games/lem
[INFO] tweaked toml for git repo https://github.com/benevolent-games/lem written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/benevolent-games/lem 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2a52d85da4aa997fbd9611466db6e738b20cc89de22cded7846af4fe588402ff
[INFO] running `Command { std: "docker" "start" "-a" "2a52d85da4aa997fbd9611466db6e738b20cc89de22cded7846af4fe588402ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a52d85da4aa997fbd9611466db6e738b20cc89de22cded7846af4fe588402ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a52d85da4aa997fbd9611466db6e738b20cc89de22cded7846af4fe588402ff", kill_on_drop: false }`
[INFO] [stdout] 2a52d85da4aa997fbd9611466db6e738b20cc89de22cded7846af4fe588402ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b386b1b951e7c0e2a2f05572bd3d82ef4cefba052a9ef740cd21629e36f8c385
[INFO] running `Command { std: "docker" "start" "-a" "b386b1b951e7c0e2a2f05572bd3d82ef4cefba052a9ef740cd21629e36f8c385", kill_on_drop: false }`
[INFO] [stderr]     Checking lem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/ast/parse.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     match token {
[INFO] [stdout] 25 | |         Token::Open => return Ok(parse_list(&mut token_iterator)?),
[INFO] [stdout] 26 | |         Token::Symbol(s) => return Ok(Expression::Symbol(s)),
[INFO] [stdout] 27 | |         Token::Number(n) => return Ok(Expression::Number(n)),
[INFO] [stdout] 28 | |         Token::Close => return Err("unexpected close ')'".to_string()),
[INFO] [stdout] 29 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/ast/parse.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     match token {
[INFO] [stdout] 25 | |         Token::Open => return Ok(parse_list(&mut token_iterator)?),
[INFO] [stdout] 26 | |         Token::Symbol(s) => return Ok(Expression::Symbol(s)),
[INFO] [stdout] 27 | |         Token::Number(n) => return Ok(Expression::Number(n)),
[INFO] [stdout] 28 | |         Token::Close => return Err("unexpected close ')'".to_string()),
[INFO] [stdout] 29 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lem` (bin "lem") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lem` (bin "lem" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b386b1b951e7c0e2a2f05572bd3d82ef4cefba052a9ef740cd21629e36f8c385", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b386b1b951e7c0e2a2f05572bd3d82ef4cefba052a9ef740cd21629e36f8c385", kill_on_drop: false }`
[INFO] [stdout] b386b1b951e7c0e2a2f05572bd3d82ef4cefba052a9ef740cd21629e36f8c385