[INFO] fetching crate palombe 0.5.1...
[INFO] checking palombe-0.5.1 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate palombe 0.5.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate palombe 0.5.1
[INFO] finished tweaking crates.io crate palombe 0.5.1
[INFO] tweaked toml for crates.io crate palombe 0.5.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate palombe 0.5.1 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9be1ae8cca25706e72cb497fc437e05dcdb3c9b0fee9884c41c1c9fe1aab7883
[INFO] running `Command { std: "docker" "start" "-a" "9be1ae8cca25706e72cb497fc437e05dcdb3c9b0fee9884c41c1c9fe1aab7883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9be1ae8cca25706e72cb497fc437e05dcdb3c9b0fee9884c41c1c9fe1aab7883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be1ae8cca25706e72cb497fc437e05dcdb3c9b0fee9884c41c1c9fe1aab7883", kill_on_drop: false }`
[INFO] [stdout] 9be1ae8cca25706e72cb497fc437e05dcdb3c9b0fee9884c41c1c9fe1aab7883
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b009c09f582173f71a3e7295f21dd884c4b6c56ec6735c9ffd7bce0276380ea
[INFO] running `Command { std: "docker" "start" "-a" "5b009c09f582173f71a3e7295f21dd884c4b6c56ec6735c9ffd7bce0276380ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking palombe v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:180:47
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub extern "C" fn c_receive(key: &CString) -> CString {
[INFO] [stdout]     |                                               ^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a `*const std::ffi::c_char` instead, and use `CStr::as_ptr()`
[INFO] [stdout]     = note: `CStr`/`CString` do not have a guaranteed layout
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::ffi::CString`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:180:47
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub extern "C" fn c_receive(key: &CString) -> CString {
[INFO] [stdout]     |                                               ^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a `*const std::ffi::c_char` instead, and use `CStr::as_ptr()`
[INFO] [stdout]     = note: `CStr`/`CString` do not have a guaranteed layout
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "5b009c09f582173f71a3e7295f21dd884c4b6c56ec6735c9ffd7bce0276380ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b009c09f582173f71a3e7295f21dd884c4b6c56ec6735c9ffd7bce0276380ea", kill_on_drop: false }`
[INFO] [stdout] 5b009c09f582173f71a3e7295f21dd884c4b6c56ec6735c9ffd7bce0276380ea