[INFO] fetching crate winrt_gen 0.7.2...
[INFO] checking winrt_gen-0.7.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate winrt_gen 0.7.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate winrt_gen 0.7.2 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] started tweaking crates.io crate winrt_gen 0.7.2
[INFO] finished tweaking crates.io crate winrt_gen 0.7.2
[INFO] tweaked toml for crates.io crate winrt_gen 0.7.2 written to /workspace/builds/worker-2-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 14 packages
[INFO] [stderr]       Adding sha1 v0.6.1 (latest: v0.10.6)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winrt_gen_macros v0.7.2
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fcf4e507cfd9df3844c07fd4d84bcaf24be4e690f218da1bacdb6b4587c5fc8
[INFO] running `Command { std: "docker" "start" "-a" "8fcf4e507cfd9df3844c07fd4d84bcaf24be4e690f218da1bacdb6b4587c5fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fcf4e507cfd9df3844c07fd4d84bcaf24be4e690f218da1bacdb6b4587c5fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fcf4e507cfd9df3844c07fd4d84bcaf24be4e690f218da1bacdb6b4587c5fc8", kill_on_drop: false }`
[INFO] [stdout] 8fcf4e507cfd9df3844c07fd4d84bcaf24be4e690f218da1bacdb6b4587c5fc8
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c74bb040b27bd1132de9a960e38c8baebbf5b72d14927c1a9b71f98641aee1b4
[INFO] running `Command { std: "docker" "start" "-a" "c74bb040b27bd1132de9a960e38c8baebbf5b72d14927c1a9b71f98641aee1b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking sha1 v0.6.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]    Compiling winrt_gen_macros v0.7.2
[INFO] [stderr]     Checking winrt_gen v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `debug` is imported redundantly
[INFO] [stdout]  --> src/types/delegate.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::types::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::types::*;
[INFO] [stdout]   |     --------------- the item `debug` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `debug` is imported redundantly
[INFO] [stdout]  --> src/types/interface.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::types::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::types::*;
[INFO] [stdout]   |     --------------- the item `debug` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AttributeArg` is imported redundantly
[INFO] [stdout]  --> src/types/method.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tables::{AttributeArg, MethodDef, TypeDef};
[INFO] [stdout]   |                     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6 | use crate::*;
[INFO] [stdout]   |     -------- the item `AttributeArg` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TypeReader` is imported redundantly
[INFO] [stdout]  --> src/types/method.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::TypeReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 | use crate::*;
[INFO] [stdout]   |     -------- the item `TypeReader` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `debug` is imported redundantly
[INFO] [stdout]  --> src/types/delegate.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::types::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::types::*;
[INFO] [stdout]   |     --------------- the item `debug` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `debug` is imported redundantly
[INFO] [stdout]  --> src/types/interface.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::types::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::types::*;
[INFO] [stdout]   |     --------------- the item `debug` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AttributeArg` is imported redundantly
[INFO] [stdout]  --> src/types/method.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tables::{AttributeArg, MethodDef, TypeDef};
[INFO] [stdout]   |                     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6 | use crate::*;
[INFO] [stdout]   |     -------- the item `AttributeArg` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/element_type.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 47 |             unknown_type => panic!(format!("Unexpected ElementType: {:x}", unknown_type)),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 47 -             unknown_type => panic!(format!("Unexpected ElementType: {:x}", unknown_type)),
[INFO] [stdout] 47 +             unknown_type => panic!("Unexpected ElementType: {:x}", unknown_type),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/element_type.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 47 |             unknown_type => panic!(format!("Unexpected ElementType: {:x}", unknown_type)),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 47 -             unknown_type => panic!(format!("Unexpected ElementType: {:x}", unknown_type)),
[INFO] [stdout] 47 +             unknown_type => panic!("Unexpected ElementType: {:x}", unknown_type),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "c74bb040b27bd1132de9a960e38c8baebbf5b72d14927c1a9b71f98641aee1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c74bb040b27bd1132de9a960e38c8baebbf5b72d14927c1a9b71f98641aee1b4", kill_on_drop: false }`
[INFO] [stdout] c74bb040b27bd1132de9a960e38c8baebbf5b72d14927c1a9b71f98641aee1b4