[INFO] fetching crate stackbox 0.1.2...
[INFO] checking stackbox-0.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate stackbox 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate stackbox 0.1.2 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] removed /workspace/builds/worker-0-tc1/source/.cargo/config
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate stackbox 0.1.2
[INFO] finished tweaking crates.io crate stackbox 0.1.2
[INFO] tweaked toml for crates.io crate stackbox 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded with_locals v0.3.2
[INFO] [stderr]   Downloaded func_wrap v0.1.3
[INFO] [stderr]   Downloaded with_locals-proc_macros v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 70cf15dcb65e526d90db663f8fa8cedc39b3d4a7b2314df7fdb55488f8df16d8
[INFO] running `Command { std: "docker" "start" "-a" "70cf15dcb65e526d90db663f8fa8cedc39b3d4a7b2314df7fdb55488f8df16d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70cf15dcb65e526d90db663f8fa8cedc39b3d4a7b2314df7fdb55488f8df16d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70cf15dcb65e526d90db663f8fa8cedc39b3d4a7b2314df7fdb55488f8df16d8", kill_on_drop: false }`
[INFO] [stdout] 70cf15dcb65e526d90db663f8fa8cedc39b3d4a7b2314df7fdb55488f8df16d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8c21bdbc1e6b57ec31508f69e76e0c4a8f9ca8cbc42b4f099143f9bda27cb59f
[INFO] running `Command { std: "docker" "start" "-a" "8c21bdbc1e6b57ec31508f69e76e0c4a8f9ca8cbc42b4f099143f9bda27cb59f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking stackbox v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `slice::iter`
[INFO] [stdout]  --> src/stackbox/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use slice::iter;
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling func_wrap v0.1.3
[INFO] [stderr]    Compiling with_locals-proc_macros v0.3.2
[INFO] [stderr]     Checking with_locals v0.3.2
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/ptr.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use ::alloc::boxed::Box;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `slice::iter`
[INFO] [stdout]  --> src/stackbox/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use slice::iter;
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/dyn_traits/mod.rs:122:37
[INFO] [stdout]     |
[INFO] [stdout] 122 |         stackbox!(let f = |_: &str| drop(not_send));
[INFO] [stdout]     |                                     ^^^^^--------^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          argument has type `i32`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "8c21bdbc1e6b57ec31508f69e76e0c4a8f9ca8cbc42b4f099143f9bda27cb59f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c21bdbc1e6b57ec31508f69e76e0c4a8f9ca8cbc42b4f099143f9bda27cb59f", kill_on_drop: false }`
[INFO] [stdout] 8c21bdbc1e6b57ec31508f69e76e0c4a8f9ca8cbc42b4f099143f9bda27cb59f
[INFO] checking stackbox-0.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate stackbox 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate stackbox 0.1.2 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] removed /workspace/builds/worker-0-tc2/source/.cargo/config
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate stackbox 0.1.2
[INFO] finished tweaking crates.io crate stackbox 0.1.2
[INFO] tweaked toml for crates.io crate stackbox 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 686b780754b41cf29d1f391a61daffd00e4353f3934a92f4bed5d692446202b8
[INFO] running `Command { std: "docker" "start" "-a" "686b780754b41cf29d1f391a61daffd00e4353f3934a92f4bed5d692446202b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "686b780754b41cf29d1f391a61daffd00e4353f3934a92f4bed5d692446202b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686b780754b41cf29d1f391a61daffd00e4353f3934a92f4bed5d692446202b8", kill_on_drop: false }`
[INFO] [stdout] 686b780754b41cf29d1f391a61daffd00e4353f3934a92f4bed5d692446202b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f3b14514bb36b23241a29f341e892c3844c490fdf90f29d8e02ece7fc17666ca
[INFO] running `Command { std: "docker" "start" "-a" "f3b14514bb36b23241a29f341e892c3844c490fdf90f29d8e02ece7fc17666ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking stackbox v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `slice::iter`
[INFO] [stdout]  --> src/stackbox/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use slice::iter;
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling func_wrap v0.1.3
[INFO] [stderr]    Compiling with_locals-proc_macros v0.3.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/with_locals-proc_macros-0.3.2/handle_let_bindings.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 | /                     throw!(let_assign.semi_token.span() =>
[INFO] [stdout] 155 | |                         "Missing expression"
[INFO] [stdout] 156 | |                     );
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `throw` (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] [stderr] error: could not compile `with_locals-proc_macros` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f3b14514bb36b23241a29f341e892c3844c490fdf90f29d8e02ece7fc17666ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b14514bb36b23241a29f341e892c3844c490fdf90f29d8e02ece7fc17666ca", kill_on_drop: false }`
[INFO] [stdout] f3b14514bb36b23241a29f341e892c3844c490fdf90f29d8e02ece7fc17666ca