[INFO] fetching crate flycatcherc-clif 0.1.1...
[INFO] checking flycatcherc-clif-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate flycatcherc-clif 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate flycatcherc-clif 0.1.1 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 crates.io crate flycatcherc-clif 0.1.1
[INFO] finished tweaking crates.io crate flycatcherc-clif 0.1.1
[INFO] tweaked toml for crates.io crate flycatcherc-clif 0.1.1 written to /workspace/builds/worker-4-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 44 packages
[INFO] [stderr]       Adding cranelift v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-bforest v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-meta v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-shared v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-entity v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-frontend v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-module v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-object v0.76.0 (latest: v0.106.1)
[INFO] [stderr]       Adding gimli v0.25.0 (latest: v0.28.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding logos v0.12.1 (latest: v0.14.0)
[INFO] [stderr]       Adding logos-derive v0.12.1 (latest: v0.14.0)
[INFO] [stderr]       Adding object v0.26.2 (latest: v0.34.0)
[INFO] [stderr]       Adding regalloc v0.0.31 (latest: v0.0.34)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[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 flycatcher-lexer v0.1.1
[INFO] [stderr]   Downloaded cranelift-entity v0.76.0
[INFO] [stderr]   Downloaded cranelift v0.76.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.76.0
[INFO] [stderr]   Downloaded cranelift-object v0.76.0
[INFO] [stderr]   Downloaded flycatcher-diagnostic v0.1.1
[INFO] [stderr]   Downloaded cranelift-module v0.76.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.76.0
[INFO] [stderr]   Downloaded object v0.26.2
[INFO] [stderr]   Downloaded cranelift-bforest v0.76.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.76.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.76.0
[INFO] [stderr]   Downloaded gimli v0.25.0
[INFO] [stderr]   Downloaded flycatcherc v0.1.1
[INFO] [stderr]   Downloaded flycatcher-parser v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a18e3abb23b8b4105aea4756dcc40b102c4feb52de449cbef669babb205cbc71
[INFO] running `Command { std: "docker" "start" "-a" "a18e3abb23b8b4105aea4756dcc40b102c4feb52de449cbef669babb205cbc71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a18e3abb23b8b4105aea4756dcc40b102c4feb52de449cbef669babb205cbc71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18e3abb23b8b4105aea4756dcc40b102c4feb52de449cbef669babb205cbc71", kill_on_drop: false }`
[INFO] [stdout] a18e3abb23b8b4105aea4756dcc40b102c4feb52de449cbef669babb205cbc71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ff6b9e41060b1ea2504e12a9d0f625bf87889ab0a0706d50f86ebfdcce870574
[INFO] running `Command { std: "docker" "start" "-a" "ff6b9e41060b1ea2504e12a9d0f625bf87889ab0a0706d50f86ebfdcce870574", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.76.0
[INFO] [stderr]    Compiling cranelift-entity v0.76.0
[INFO] [stderr]    Compiling target-lexicon v0.12.14
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]     Checking flycatcher-diagnostic v0.1.1
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.76.0
[INFO] [stderr]     Checking cranelift-bforest v0.76.0
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]     Checking flycatcher-lexer v0.1.1
[INFO] [stderr]     Checking flycatcher-parser v0.1.1
[INFO] [stderr]     Checking flycatcherc v0.1.1
[INFO] [stderr]    Compiling cranelift-codegen v0.76.0
[INFO] [stderr]     Checking cranelift-frontend v0.76.0
[INFO] [stderr]     Checking cranelift-module v0.76.0
[INFO] [stderr]     Checking cranelift-object v0.76.0
[INFO] [stderr]     Checking cranelift v0.76.0
[INFO] [stderr]     Checking flycatcherc-clif v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `settings` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `settings` is already imported here
[INFO] [stdout] 4 | use cranelift_codegen::binemit::{NullStackMapSink, NullTrapSink};
[INFO] [stdout] 5 | use cranelift_codegen::settings::{self, Configurable};
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Configurable` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:41
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `Configurable` is already imported here
[INFO] [stdout] 4 | use cranelift_codegen::binemit::{NullStackMapSink, NullTrapSink};
[INFO] [stdout] 5 | use cranelift_codegen::settings::{self, Configurable};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `settings` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `settings` is already imported here
[INFO] [stdout] 4 | use cranelift_codegen::binemit::{NullStackMapSink, NullTrapSink};
[INFO] [stdout] 5 | use cranelift_codegen::settings::{self, Configurable};
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Configurable` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:41
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `Configurable` is already imported here
[INFO] [stdout] 4 | use cranelift_codegen::binemit::{NullStackMapSink, NullTrapSink};
[INFO] [stdout] 5 | use cranelift_codegen::settings::{self, Configurable};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.89s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.76.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "ff6b9e41060b1ea2504e12a9d0f625bf87889ab0a0706d50f86ebfdcce870574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff6b9e41060b1ea2504e12a9d0f625bf87889ab0a0706d50f86ebfdcce870574", kill_on_drop: false }`
[INFO] [stdout] ff6b9e41060b1ea2504e12a9d0f625bf87889ab0a0706d50f86ebfdcce870574
[INFO] checking flycatcherc-clif-0.1.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate flycatcherc-clif 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate flycatcherc-clif 0.1.1 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 crates.io crate flycatcherc-clif 0.1.1
[INFO] finished tweaking crates.io crate flycatcherc-clif 0.1.1
[INFO] tweaked toml for crates.io crate flycatcherc-clif 0.1.1 written to /workspace/builds/worker-4-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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5626e071b5f6f3f1621b1b7d0211778fd8e7db732424a18214609d6d060738c7
[INFO] running `Command { std: "docker" "start" "-a" "5626e071b5f6f3f1621b1b7d0211778fd8e7db732424a18214609d6d060738c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5626e071b5f6f3f1621b1b7d0211778fd8e7db732424a18214609d6d060738c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5626e071b5f6f3f1621b1b7d0211778fd8e7db732424a18214609d6d060738c7", kill_on_drop: false }`
[INFO] [stdout] 5626e071b5f6f3f1621b1b7d0211778fd8e7db732424a18214609d6d060738c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 449e30545cc6c5b63b009b2a18a5f1cce46f492330a8ba62d5d856f069b14958
[INFO] running `Command { std: "docker" "start" "-a" "449e30545cc6c5b63b009b2a18a5f1cce46f492330a8ba62d5d856f069b14958", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling cranelift-entity v0.76.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.76.0
[INFO] [stderr]    Compiling target-lexicon v0.12.14
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking flycatcher-diagnostic v0.1.1
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.76.0
[INFO] [stderr]     Checking cranelift-bforest v0.76.0
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]     Checking flycatcher-lexer v0.1.1
[INFO] [stderr]     Checking flycatcher-parser v0.1.1
[INFO] [stderr]     Checking flycatcherc v0.1.1
[INFO] [stderr]    Compiling cranelift-codegen v0.76.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/cranelift-codegen-0.76.0/src/simple_preopt.rs:1079:13
[INFO] [stdout]      |
[INFO] [stdout] 1079 |             panic!();
[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 `panic` (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 `cranelift-codegen` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "449e30545cc6c5b63b009b2a18a5f1cce46f492330a8ba62d5d856f069b14958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449e30545cc6c5b63b009b2a18a5f1cce46f492330a8ba62d5d856f069b14958", kill_on_drop: false }`
[INFO] [stdout] 449e30545cc6c5b63b009b2a18a5f1cce46f492330a8ba62d5d856f069b14958