[INFO] fetching crate encoding_c_mem 0.2.6...
[INFO] checking encoding_c_mem-0.2.6 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate encoding_c_mem 0.2.6 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate encoding_c_mem 0.2.6 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate encoding_c_mem 0.2.6
[INFO] finished tweaking crates.io crate encoding_c_mem 0.2.6
[INFO] tweaked toml for crates.io crate encoding_c_mem 0.2.6 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b98be46e817aa5f67e1f53a85b516030f7c8865363a19866d6c4a4a2965028f9
[INFO] running `Command { std: "docker" "start" "-a" "b98be46e817aa5f67e1f53a85b516030f7c8865363a19866d6c4a4a2965028f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b98be46e817aa5f67e1f53a85b516030f7c8865363a19866d6c4a4a2965028f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98be46e817aa5f67e1f53a85b516030f7c8865363a19866d6c4a4a2965028f9", kill_on_drop: false }`
[INFO] [stdout] b98be46e817aa5f67e1f53a85b516030f7c8865363a19866d6c4a4a2965028f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0f3a3db59b31eabfc5c8705718a67e034723e5e733227be76b4a804fa51c81
[INFO] running `Command { std: "docker" "start" "-a" "2e0f3a3db59b31eabfc5c8705718a67e034723e5e733227be76b4a804fa51c81", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling encoding_c_mem v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stdout] warning: `extern` fn uses type `char`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:198:55
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub unsafe extern "C" fn encoding_mem_is_char_bidi(c: char) -> bool {
[INFO] [stdout]     |                                                       ^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider using `u32` or `libc::wchar_t` instead
[INFO] [stdout]     = note: the `char` type has no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `char`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:198:55
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub unsafe extern "C" fn encoding_mem_is_char_bidi(c: char) -> bool {
[INFO] [stdout]     |                                                       ^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider using `u32` or `libc::wchar_t` instead
[INFO] [stdout]     = note: the `char` type has no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "2e0f3a3db59b31eabfc5c8705718a67e034723e5e733227be76b4a804fa51c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0f3a3db59b31eabfc5c8705718a67e034723e5e733227be76b4a804fa51c81", kill_on_drop: false }`
[INFO] [stdout] 2e0f3a3db59b31eabfc5c8705718a67e034723e5e733227be76b4a804fa51c81