[INFO] cloning repository https://github.com/ziord/violet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ziord/violet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fziord%2Fviolet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fziord%2Fviolet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c65b5295259c983e874651090c5bbcbe703f8cb7
[INFO] checking ziord/violet against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fziord%2Fviolet" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ziord/violet 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/ziord/violet
[INFO] finished tweaking git repo https://github.com/ziord/violet
[INFO] tweaked toml for git repo https://github.com/ziord/violet written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ziord/violet 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 098e0b2af91c535de86f9d833e06bf9d5f00ca79f7b6dece2929be7480f82786
[INFO] running `Command { std: "docker" "start" "-a" "098e0b2af91c535de86f9d833e06bf9d5f00ca79f7b6dece2929be7480f82786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "098e0b2af91c535de86f9d833e06bf9d5f00ca79f7b6dece2929be7480f82786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "098e0b2af91c535de86f9d833e06bf9d5f00ca79f7b6dece2929be7480f82786", kill_on_drop: false }`
[INFO] [stdout] 098e0b2af91c535de86f9d833e06bf9d5f00ca79f7b6dece2929be7480f82786
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f227423ae28470e3c5bc4f07a63f045edf8149106c3346f765ef7941f233b420
[INFO] running `Command { std: "docker" "start" "-a" "f227423ae28470e3c5bc4f07a63f045edf8149106c3346f765ef7941f233b420", kill_on_drop: false }`
[INFO] [stderr]     Checking violet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `error_code` is never read
[INFO] [stdout]   --> src/errors.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ErrorInfo<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 22 |   pub error_code: ViError,
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/compiler.rs:464:16
[INFO] [stdout]     |
[INFO] [stdout] 464 |         .as_ref()
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 465 | |       .borrow()
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Option<&RefCell<Rc<Type>>>` does not implement `Borrow`, so calling `borrow` on `&Option<&RefCell<Rc<Type>>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 464 -       .as_ref()
[INFO] [stdout] 465 -       .borrow()
[INFO] [stdout] 464 +       .as_ref()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error_code` is never read
[INFO] [stdout]   --> src/errors.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ErrorInfo<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 22 |   pub error_code: ViError,
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/compiler.rs:464:16
[INFO] [stdout]     |
[INFO] [stdout] 464 |         .as_ref()
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 465 | |       .borrow()
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Option<&RefCell<Rc<Type>>>` does not implement `Borrow`, so calling `borrow` on `&Option<&RefCell<Rc<Type>>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 464 -       .as_ref()
[INFO] [stdout] 465 -       .borrow()
[INFO] [stdout] 464 +       .as_ref()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "f227423ae28470e3c5bc4f07a63f045edf8149106c3346f765ef7941f233b420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f227423ae28470e3c5bc4f07a63f045edf8149106c3346f765ef7941f233b420", kill_on_drop: false }`
[INFO] [stdout] f227423ae28470e3c5bc4f07a63f045edf8149106c3346f765ef7941f233b420
[INFO] checking ziord/violet against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fziord%2Fviolet" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ziord/violet 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/ziord/violet
[INFO] finished tweaking git repo https://github.com/ziord/violet
[INFO] tweaked toml for git repo https://github.com/ziord/violet written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ziord/violet 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 355a76db296060d0ad2c3f7bdb0e6ffa3c400fb34cfe0ee27e39948757b7bb9a
[INFO] running `Command { std: "docker" "start" "-a" "355a76db296060d0ad2c3f7bdb0e6ffa3c400fb34cfe0ee27e39948757b7bb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "355a76db296060d0ad2c3f7bdb0e6ffa3c400fb34cfe0ee27e39948757b7bb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "355a76db296060d0ad2c3f7bdb0e6ffa3c400fb34cfe0ee27e39948757b7bb9a", kill_on_drop: false }`
[INFO] [stdout] 355a76db296060d0ad2c3f7bdb0e6ffa3c400fb34cfe0ee27e39948757b7bb9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 905b1edb493498dc12b5c0782a90b032350e28a1d8eb0e2d5caa1c4ca2e6b811
[INFO] running `Command { std: "docker" "start" "-a" "905b1edb493498dc12b5c0782a90b032350e28a1d8eb0e2d5caa1c4ca2e6b811", kill_on_drop: false }`
[INFO] [stderr]     Checking violet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/util.rs:45:5
[INFO] [stdout]     |
[INFO] [stdout] 45  | /     {
[INFO] [stdout] 46  | |       dbg!($($msg)*);
[INFO] [stdout] 47  | |       panic!($($msg)*)
[INFO] [stdout] 48  | |     }
[INFO] [stdout]     | |_____^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/propagate.rs:110:11
[INFO] [stdout]     |
[INFO] [stdout] 110 |             verror!("Invalid target for dereference: attempt to dereference a void pointer");
[INFO] [stdout]     |             -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `verror` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/util.rs:45:5
[INFO] [stdout]     |
[INFO] [stdout] 45  | /     {
[INFO] [stdout] 46  | |       dbg!($($msg)*);
[INFO] [stdout] 47  | |       panic!($($msg)*)
[INFO] [stdout] 48  | |     }
[INFO] [stdout]     | |_____^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/propagate.rs:110:11
[INFO] [stdout]     |
[INFO] [stdout] 110 |             verror!("Invalid target for dereference: attempt to dereference a void pointer");
[INFO] [stdout]     |             -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `verror` (in Nightly builds, run with -Z macro-backtrace for more info)
[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: 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 `violet` (bin "violet" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `violet` (bin "violet") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "905b1edb493498dc12b5c0782a90b032350e28a1d8eb0e2d5caa1c4ca2e6b811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "905b1edb493498dc12b5c0782a90b032350e28a1d8eb0e2d5caa1c4ca2e6b811", kill_on_drop: false }`
[INFO] [stdout] 905b1edb493498dc12b5c0782a90b032350e28a1d8eb0e2d5caa1c4ca2e6b811