[INFO] fetching crate blake2b-ref 0.1.0...
[INFO] checking blake2b-ref-0.1.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate blake2b-ref 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate blake2b-ref 0.1.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blake2b-ref 0.1.0
[INFO] finished tweaking crates.io crate blake2b-ref 0.1.0
[INFO] tweaked toml for crates.io crate blake2b-ref 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29cb317637d97f0567a0ab3cd8100c61eb5e0b43acd777ddc0199ef9f40f5cc4
[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" "29cb317637d97f0567a0ab3cd8100c61eb5e0b43acd777ddc0199ef9f40f5cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29cb317637d97f0567a0ab3cd8100c61eb5e0b43acd777ddc0199ef9f40f5cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29cb317637d97f0567a0ab3cd8100c61eb5e0b43acd777ddc0199ef9f40f5cc4", kill_on_drop: false }`
[INFO] [stdout] 29cb317637d97f0567a0ab3cd8100c61eb5e0b43acd777ddc0199ef9f40f5cc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f3d019325349766bcd6d19890890d7d7d11374db54cd404567144f17ce53f96
[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" "8f3d019325349766bcd6d19890890d7d7d11374db54cd404567144f17ce53f96", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking faster-hex v0.4.1
[INFO] [stderr]     Checking blake2b-ref v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/blake2b_ref.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 |     v.fill(0, n);
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:425:10
[INFO] [stdout]     |
[INFO] [stdout] 425 |         .fill(0, ::core::mem::size_of::<[uint8_t; 14]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:428:10
[INFO] [stdout]     |
[INFO] [stdout] 428 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:431:10
[INFO] [stdout]     |
[INFO] [stdout] 431 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:482:10
[INFO] [stdout]     |
[INFO] [stdout] 482 |         .fill(0, ::core::mem::size_of::<[uint8_t; 14]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:485:10
[INFO] [stdout]     |
[INFO] [stdout] 485 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:488:10
[INFO] [stdout]     |
[INFO] [stdout] 488 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/blake2b_ref.rs:3950:38
[INFO] [stdout]      |
[INFO] [stdout] 3950 |     (*S).buf[(*S).buflen as usize..].fill(
[INFO] [stdout]      |                                      ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(slice_fill)]` to the crate attributes to enable `slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/blake2b_ref.rs:87:44
[INFO] [stdout]    |
[INFO] [stdout] 87 | unsafe extern "C" fn secure_zero_memory(v: &mut [u8], mut n: usize) {
[INFO] [stdout]    |                                            ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/blake2b_ref.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 |     v.fill(0, n);
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:425:10
[INFO] [stdout]     |
[INFO] [stdout] 425 |         .fill(0, ::core::mem::size_of::<[uint8_t; 14]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:428:10
[INFO] [stdout]     |
[INFO] [stdout] 428 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:431:10
[INFO] [stdout]     |
[INFO] [stdout] 431 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:482:10
[INFO] [stdout]     |
[INFO] [stdout] 482 |         .fill(0, ::core::mem::size_of::<[uint8_t; 14]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:485:10
[INFO] [stdout]     |
[INFO] [stdout] 485 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/blake2b_ref.rs:488:10
[INFO] [stdout]     |
[INFO] [stdout] 488 |         .fill(0, ::core::mem::size_of::<[uint8_t; 16]>());
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/blake2b_ref.rs:3950:38
[INFO] [stdout]      |
[INFO] [stdout] 3950 |     (*S).buf[(*S).buflen as usize..].fill(
[INFO] [stdout]      |                                      ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `Fill::fill(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(slice_fill)]` to the crate attributes to enable `core::slice::<impl [T]>::fill`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/blake2b_ref.rs:87:44
[INFO] [stdout]    |
[INFO] [stdout] 87 | unsafe extern "C" fn secure_zero_memory(v: &mut [u8], mut n: usize) {
[INFO] [stdout]    |                                            ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.81s
[INFO] running `Command { std: "docker" "inspect" "8f3d019325349766bcd6d19890890d7d7d11374db54cd404567144f17ce53f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3d019325349766bcd6d19890890d7d7d11374db54cd404567144f17ce53f96", kill_on_drop: false }`
[INFO] [stdout] 8f3d019325349766bcd6d19890890d7d7d11374db54cd404567144f17ce53f96
