[INFO] cloning repository https://github.com/akky2501/mincaml-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akky2501/mincaml-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2Fmincaml-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2Fmincaml-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8295cf3166d850c830ed45b1330d7f8230eb119
[INFO] testing akky2501/mincaml-rust against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2Fmincaml-rust" "/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/akky2501/mincaml-rust on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/akky2501/mincaml-rust
[INFO] finished tweaking git repo https://github.com/akky2501/mincaml-rust
[INFO] tweaked toml for git repo https://github.com/akky2501/mincaml-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/akky2501/mincaml-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v2.2.0
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ae23d83bca0a41887f960e3e036a5e761ce32b26f88ba87339c862b86a18dd90
[INFO] running `Command { std: "docker" "start" "-a" "ae23d83bca0a41887f960e3e036a5e761ce32b26f88ba87339c862b86a18dd90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae23d83bca0a41887f960e3e036a5e761ce32b26f88ba87339c862b86a18dd90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae23d83bca0a41887f960e3e036a5e761ce32b26f88ba87339c862b86a18dd90", kill_on_drop: false }`
[INFO] [stdout] ae23d83bca0a41887f960e3e036a5e761ce32b26f88ba87339c862b86a18dd90
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edaccf518600f84238f9a759dbd49d656e837f9086347b7f6f97b30d8bc454aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "edaccf518600f84238f9a759dbd49d656e837f9086347b7f6f97b30d8bc454aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling nom v2.2.0
[INFO] [stderr]    Compiling lazy_static v0.2.5
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling mincaml-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: casts cannot be followed by a method call
[INFO] [stdout]    --> src/typing.rs:324:23
[INFO] [stdout]     |
[INFO] [stdout] 324 |             Ok(infer!(id : ty.generalize(env), t2))
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try surrounding the expression in parentheses
[INFO] [stdout]     |
[INFO] [stdout] 324 |             Ok(infer!((id : ty).generalize(env), t2))
[INFO] [stdout]     |                       ^       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casts cannot be followed by a method call
[INFO] [stdout]    --> src/typing.rs:358:23
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Ok(infer!(name : fun_type.generalize(env), t))
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try surrounding the expression in parentheses
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Ok(infer!((name : fun_type).generalize(env), t))
[INFO] [stdout]     |                       ^               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mincaml-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "edaccf518600f84238f9a759dbd49d656e837f9086347b7f6f97b30d8bc454aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edaccf518600f84238f9a759dbd49d656e837f9086347b7f6f97b30d8bc454aa", kill_on_drop: false }`
[INFO] [stdout] edaccf518600f84238f9a759dbd49d656e837f9086347b7f6f97b30d8bc454aa