[INFO] fetching crate jni-mangle 0.1.3...
[INFO] testing jni-mangle-0.1.3 against 1.99.0-beta.1 for beta-1.99-5
[INFO] extracting crate jni-mangle 0.1.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate jni-mangle 0.1.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate jni-mangle 0.1.3
[INFO] tweaked toml for crates.io crate jni-mangle 0.1.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jni-mangle 0.1.3 on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jni-mangle 0.1.3 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" "+1.99.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f
[INFO] running `Command { std: "docker" "start" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling jni-mangle v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `syn::Block`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use syn::Block;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.14s
[INFO] running `Command { std: "docker" "inspect" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling jni-mangle v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `syn::Block`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use syn::Block;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::Block`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use syn::Block;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions generic over types or consts must be mangled
[INFO] [stdout]   --> examples/example.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 25 |   #[mangle(package = "com.example", class = "Example")]
[INFO] [stdout]    |   ----------------------------------------------------- help: remove this attribute
[INFO] [stdout] 26 | / pub fn test_fn<'a, T>(var: &'a T) -> String
[INFO] [stdout] 27 | | where
[INFO] [stdout] 28 | |     T: ToString,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> examples/example.rs:26:38
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn test_fn<'a, T>(var: &'a T) -> String
[INFO] [stdout]    |                                      ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions generic over types or consts must be mangled
[INFO] [stdout]   --> examples/example.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[mangle(package = "com.example", class = "Example")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove this attribute
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `mangle` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jni-mangle` (example "example") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f", kill_on_drop: false }`
[INFO] [stdout] d6f20cbc7e11586cf6c2eda1df4401dcf3eea8ea9b43d7ee5ef8fb6ac8c5e08f