[INFO] cloning repository https://github.com/FreeMasen/min-short-mlua-traceback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FreeMasen/min-short-mlua-traceback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmin-short-mlua-traceback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmin-short-mlua-traceback'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b617c13330baecac6e542647e7cb49705198cf6
[INFO] checking FreeMasen/min-short-mlua-traceback against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmin-short-mlua-traceback" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FreeMasen/min-short-mlua-traceback on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FreeMasen/min-short-mlua-traceback
[INFO] finished tweaking git repo https://github.com/FreeMasen/min-short-mlua-traceback
[INFO] tweaked toml for git repo https://github.com/FreeMasen/min-short-mlua-traceback written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FreeMasen/min-short-mlua-traceback 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded erased-serde v0.3.16
[INFO] [stderr]   Downloaded lua-src v543.1.0
[INFO] [stderr]   Downloaded luajit-src v210.3.2+resty1085a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7a784ef28f9ebc1310810524852018ade295375d796c5520dfe015edd41b139
[INFO] running `Command { std: "docker" "start" "-a" "f7a784ef28f9ebc1310810524852018ade295375d796c5520dfe015edd41b139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7a784ef28f9ebc1310810524852018ade295375d796c5520dfe015edd41b139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a784ef28f9ebc1310810524852018ade295375d796c5520dfe015edd41b139", kill_on_drop: false }`
[INFO] [stdout] f7a784ef28f9ebc1310810524852018ade295375d796c5520dfe015edd41b139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ce0c426a233b5d69f10bf4dca62715c1a004c8db7ea3f4b322b0e95094f0a4a
[INFO] running `Command { std: "docker" "start" "-a" "2ce0c426a233b5d69f10bf4dca62715c1a004c8db7ea3f4b322b0e95094f0a4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling erased-serde v0.3.16
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling luajit-src v210.3.2+resty1085a4d
[INFO] [stderr]    Compiling lua-src v543.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling mlua v0.6.6
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]     Checking min-short-mlua-traceback v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.83s
[INFO] running `Command { std: "docker" "inspect" "2ce0c426a233b5d69f10bf4dca62715c1a004c8db7ea3f4b322b0e95094f0a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ce0c426a233b5d69f10bf4dca62715c1a004c8db7ea3f4b322b0e95094f0a4a", kill_on_drop: false }`
[INFO] [stdout] 2ce0c426a233b5d69f10bf4dca62715c1a004c8db7ea3f4b322b0e95094f0a4a
[INFO] checking FreeMasen/min-short-mlua-traceback against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmin-short-mlua-traceback" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FreeMasen/min-short-mlua-traceback on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FreeMasen/min-short-mlua-traceback
[INFO] finished tweaking git repo https://github.com/FreeMasen/min-short-mlua-traceback
[INFO] tweaked toml for git repo https://github.com/FreeMasen/min-short-mlua-traceback written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/FreeMasen/min-short-mlua-traceback 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf70800b40026b15255cc56865baabaa7c6d3e60f1eaea36df779fa5b00914e7
[INFO] running `Command { std: "docker" "start" "-a" "bf70800b40026b15255cc56865baabaa7c6d3e60f1eaea36df779fa5b00914e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf70800b40026b15255cc56865baabaa7c6d3e60f1eaea36df779fa5b00914e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf70800b40026b15255cc56865baabaa7c6d3e60f1eaea36df779fa5b00914e7", kill_on_drop: false }`
[INFO] [stdout] bf70800b40026b15255cc56865baabaa7c6d3e60f1eaea36df779fa5b00914e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84c57237aae475fc6e1102bcaff909f18b0dbe8f43e7ef3bbdbcae488d45c85d
[INFO] running `Command { std: "docker" "start" "-a" "84c57237aae475fc6e1102bcaff909f18b0dbe8f43e7ef3bbdbcae488d45c85d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling erased-serde v0.3.16
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling lua-src v543.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling luajit-src v210.3.2+resty1085a4d
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling mlua v0.6.6
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stdout] error[E0277]: the trait bound `!: FromLuaMulti<'_>` is not satisfied
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mlua-0.6.6/src/lua.rs:2298:14
[INFO] [stdout]      |
[INFO] [stdout] 2298 |         self.call(())?;
[INFO] [stdout]      |              ^^^^ the trait `UserData` is not implemented for `!`, which is required by `!: FromLuaMulti<'_>`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the following other types implement trait `FromLuaMulti<'lua>`:
[INFO] [stdout]                ()
[INFO] [stdout]                (A,)
[INFO] [stdout]                (B, A)
[INFO] [stdout]                (B, C, A)
[INFO] [stdout]                (B, C, D, A)
[INFO] [stdout]                (B, C, D, E, A)
[INFO] [stdout]                (B, C, D, E, F, A)
[INFO] [stdout]                (B, C, D, E, F, G, A)
[INFO] [stdout]              and 11 others
[INFO] [stdout] note: required for `!` to implement `FromLua<'_>`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mlua-0.6.6/src/conversion.rs:147:43
[INFO] [stdout]      |
[INFO] [stdout] 147  | impl<'lua, T: 'static + UserData + Clone> FromLua<'lua> for T {
[INFO] [stdout]      |                         --------          ^^^^^^^^^^^^^     ^
[INFO] [stdout]      |                         |
[INFO] [stdout]      |                         unsatisfied trait bound introduced here
[INFO] [stdout] note: required for `!` to implement `FromLuaMulti<'_>`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mlua-0.6.6/src/multi.rs:37:30
[INFO] [stdout]      |
[INFO] [stdout] 37   | impl<'lua, T: FromLua<'lua>> FromLuaMulti<'lua> for T {
[INFO] [stdout]      |               -------------  ^^^^^^^^^^^^^^^^^^     ^
[INFO] [stdout]      |               |
[INFO] [stdout]      |               unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `Chunk::<'lua, 'a>::call`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mlua-0.6.6/src/lua.rs:2376:41
[INFO] [stdout]      |
[INFO] [stdout] 2376 |     pub fn call<A: ToLuaMulti<'lua>, R: FromLuaMulti<'lua>>(self, args: A) -> Result<R> {
[INFO] [stdout]      |                                         ^^^^^^^^^^^^^^^^^^ required by this bound in `Chunk::<'lua, 'a>::call`
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mlua` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "84c57237aae475fc6e1102bcaff909f18b0dbe8f43e7ef3bbdbcae488d45c85d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84c57237aae475fc6e1102bcaff909f18b0dbe8f43e7ef3bbdbcae488d45c85d", kill_on_drop: false }`
[INFO] [stdout] 84c57237aae475fc6e1102bcaff909f18b0dbe8f43e7ef3bbdbcae488d45c85d