[INFO] fetching crate xcb 1.7.1...
[INFO] testing xcb-1.7.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate xcb 1.7.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate xcb 1.7.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate xcb 1.7.1
[INFO] tweaked toml for crates.io crate xcb 1.7.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xcb 1.7.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xcb 1.7.1 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.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tiny-xlib v0.2.5
[INFO] [stderr]   Downloaded ctor v0.10.1
[INFO] [stderr]   Downloaded dtor v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548
[INFO] running `Command { std: "docker" "start" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", 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" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", 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" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling xcb v1.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: declarations returning `c_void` are not compatible with C functions returning `void`
[INFO] [stdout]    --> src/ffi/base.rs:131:84
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub(crate) fn xcb_prefetch_maximum_request_length(c: *mut xcb_connection_t) -> c_void;
[INFO] [stdout]     |                                                                                ----^^^^^^
[INFO] [stdout]     |                                                                                |
[INFO] [stdout]     |                                                                                help: remove the return type to implicitly return `()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: returning `()` in Rust is equivalent to returning `void` in C
[INFO] [stdout]     = note: `c_void` is only used through raw pointers for compatibility with `void` pointers
[INFO] [stdout]     = note: `#[warn(c_void_returns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 9.16s
[INFO] running `Command { std: "docker" "inspect" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", 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" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.10
[INFO] [stderr]    Compiling xml-rs v0.8.29
[INFO] [stderr]    Compiling tiny-xlib v0.2.5
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling ctor v0.10.1
[INFO] [stderr]    Compiling as-raw-xcb-connection v1.0.1
[INFO] [stdout] warning: declarations returning `c_void` are not compatible with C functions returning `void`
[INFO] [stdout]    --> src/ffi/base.rs:131:84
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub(crate) fn xcb_prefetch_maximum_request_length(c: *mut xcb_connection_t) -> c_void;
[INFO] [stdout]     |                                                                                ----^^^^^^
[INFO] [stdout]     |                                                                                |
[INFO] [stdout]     |                                                                                help: remove the return type to implicitly return `()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: returning `()` in Rust is equivalent to returning `void` in C
[INFO] [stdout]     = note: `c_void` is only used through raw pointers for compatibility with `void` pointers
[INFO] [stdout]     = note: `#[warn(c_void_returns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling png v0.18.1
[INFO] [stderr]    Compiling xcb v1.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: declarations returning `c_void` are not compatible with C functions returning `void`
[INFO] [stdout]    --> src/ffi/base.rs:131:84
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub(crate) fn xcb_prefetch_maximum_request_length(c: *mut xcb_connection_t) -> c_void;
[INFO] [stdout]     |                                                                                ----^^^^^^
[INFO] [stdout]     |                                                                                |
[INFO] [stdout]     |                                                                                help: remove the return type to implicitly return `()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: returning `()` in Rust is equivalent to returning `void` in C
[INFO] [stdout]     = note: `c_void` is only used through raw pointers for compatibility with `void` pointers
[INFO] [stdout]     = note: `#[warn(c_void_returns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 20.81s
[INFO] running `Command { std: "docker" "inspect" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", 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" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: declarations returning `c_void` are not compatible with C functions returning `void`
[INFO] [stderr]    --> src/ffi/base.rs:131:84
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub(crate) fn xcb_prefetch_maximum_request_length(c: *mut xcb_connection_t) -> c_void;
[INFO] [stderr]     |                                                                                ----^^^^^^
[INFO] [stderr]     |                                                                                |
[INFO] [stderr]     |                                                                                help: remove the return type to implicitly return `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: returning `()` in Rust is equivalent to returning `void` in C
[INFO] [stderr]     = note: `c_void` is only used through raw pointers for compatibility with `void` pointers
[INFO] [stderr]     = note: `#[warn(c_void_returns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `xcb` (lib) generated 1 warning
[INFO] [stderr] warning: `xcb` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/xcb-19ef5d288246653f)
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test test::test_dynbuf_from_data ... ok
[INFO] [stdout] test lat1_str::test_latin_str ... ok
[INFO] [stdout] test base::test_align_pad ... ok
[INFO] [stdout] test test::test_cw_cmp ... ok
[INFO] [stdout] test event::test_event_send_sync ... ok
[INFO] [stdout] test test::atom_hashmap ... ok
[INFO] [stdout] test test::test_fixbuf_from_data ... ok
[INFO] [stdout] test test::test_event_new ... ok
[INFO] [stdout] test xproto::test_sizeof_arc ... ok
[INFO] [stdout] test xproto::test_sizeof_coloritem ... ok
[INFO] [stdout] test xproto::test_sizeof_cursor ... ok
[INFO] [stdout] test xproto::test_sizeof_colormap ... ok
[INFO] [stdout] test xproto::test_sizeof_fontprop ... ok
[INFO] [stdout] test xproto::test_sizeof_format ... ok
[INFO] [stdout] test xproto::test_sizeof_atom ... ok
[INFO] [stdout] test xproto::test_sizeof_char2b ... ok
[INFO] [stdout] test xproto::test_sizeof_charinfo ... ok
[INFO] [stdout] test xproto::test_sizeof_gcontext ... ok
[INFO] [stdout] test xproto::test_sizeof_pixmap ... ok
[INFO] [stdout] test xproto::test_sizeof_point ... ok
[INFO] [stdout] test xproto::test_sizeof_rectangle ... ok
[INFO] [stdout] test xproto::test_sizeof_rgb ... ok
[INFO] [stdout] test xproto::test_sizeof_font ... ok
[INFO] [stdout] test xproto::test_sizeof_segment ... ok
[INFO] [stdout] test xproto::test_sizeof_timecoord ... ok
[INFO] [stdout] test xproto::test_sizeof_window ... ok
[INFO] [stdout] test xproto::test_sizeof_visualtype ... ok
[INFO] [stdout] test test::test_dynbuf_from_data_panic - should panic ... FAILED
[INFO] [stdout] test test::test_cw_is_sorted_distinct ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test::test_dynbuf_from_data_panic stdout ----
[INFO] [stdout] note: test did not panic as expected at src/test.rs:132:4
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::test_dynbuf_from_data_panic
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 28 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548", kill_on_drop: false }`
[INFO] [stdout] 70a3030197340432553032ec382080d36876ba2eb6aab3c39047c748f84f2548
