[INFO] fetching crate f128_internal 0.2.1...
[INFO] checking f128_internal-0.2.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate f128_internal 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate f128_internal 0.2.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate f128_internal 0.2.1
[INFO] finished tweaking crates.io crate f128_internal 0.2.1
[INFO] tweaked toml for crates.io crate f128_internal 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d6bd50e2f9cd215ece77784ba29a43da03d836c86807ae29337c6902fbab275
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7d6bd50e2f9cd215ece77784ba29a43da03d836c86807ae29337c6902fbab275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d6bd50e2f9cd215ece77784ba29a43da03d836c86807ae29337c6902fbab275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d6bd50e2f9cd215ece77784ba29a43da03d836c86807ae29337c6902fbab275", kill_on_drop: false }`
[INFO] [stdout] 7d6bd50e2f9cd215ece77784ba29a43da03d836c86807ae29337c6902fbab275
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 78201c334e5e6ac4ae52b28c649968e7ab69043b5189f6b641a0fe90d750395c
[INFO] running `Command { std: "docker" "start" "-a" "78201c334e5e6ac4ae52b28c649968e7ab69043b5189f6b641a0fe90d750395c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling f128_internal v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn u128_to_f128(x: [u8; 16]) -> f128;
[INFO] [stdout]    |                            ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:28:37
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn f128_to_u128(x: f128) -> [u8; 16];
[INFO] [stdout]    |                                     ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn i128_to_f128(x: [u8; 16]) -> f128;
[INFO] [stdout]    |                            ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn f128_to_i128(x: f128) -> [u8; 16];
[INFO] [stdout]    |                                     ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `zero`
[INFO] [stdout]   --> src/lib.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let zero = f128::from_u8(0).unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_zero`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn u128_to_f128(x: [u8; 16]) -> f128;
[INFO] [stdout]    |                            ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:28:37
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn f128_to_u128(x: f128) -> [u8; 16];
[INFO] [stdout]    |                                     ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn i128_to_f128(x: [u8; 16]) -> f128;
[INFO] [stdout]    |                            ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn f128_to_i128(x: f128) -> [u8; 16];
[INFO] [stdout]    |                                     ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider passing a pointer to the array
[INFO] [stdout]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "78201c334e5e6ac4ae52b28c649968e7ab69043b5189f6b641a0fe90d750395c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78201c334e5e6ac4ae52b28c649968e7ab69043b5189f6b641a0fe90d750395c", kill_on_drop: false }`
[INFO] [stdout] 78201c334e5e6ac4ae52b28c649968e7ab69043b5189f6b641a0fe90d750395c