[INFO] fetching crate fixed-slice-vec 0.10.0...
[INFO] checking fixed-slice-vec-0.10.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate fixed-slice-vec 0.10.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate fixed-slice-vec 0.10.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate fixed-slice-vec 0.10.0
[INFO] finished tweaking crates.io crate fixed-slice-vec 0.10.0
[INFO] tweaked toml for crates.io crate fixed-slice-vec 0.10.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proptest v0.9.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82176f2aef9b05367ca2ae3a3212a448227d302898d5a8eccfa3b20b81a9272d
[INFO] running `Command { std: "docker" "start" "-a" "82176f2aef9b05367ca2ae3a3212a448227d302898d5a8eccfa3b20b81a9272d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82176f2aef9b05367ca2ae3a3212a448227d302898d5a8eccfa3b20b81a9272d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82176f2aef9b05367ca2ae3a3212a448227d302898d5a8eccfa3b20b81a9272d", kill_on_drop: false }`
[INFO] [stdout] 82176f2aef9b05367ca2ae3a3212a448227d302898d5a8eccfa3b20b81a9272d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aab8950f65b5ef15787626437fa9d64a597848e09ccaff054829bf2060b40fe
[INFO] running `Command { std: "docker" "start" "-a" "7aab8950f65b5ef15787626437fa9d64a597848e09ccaff054829bf2060b40fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking fixed-slice-vec v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `From` is imported redundantly
[INFO] [stdout]   --> src/vec.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Extend` is imported redundantly
[INFO] [stdout]  --> src/vec.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::iter::Extend;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Extend` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
[INFO] [stdout]   --> src/single.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |     debug_assert!(!destination.as_ptr().is_null());
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(useless_ptr_null_checks)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
[INFO] [stdout]   --> src/single.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 |     debug_assert!(!destination.as_ptr().is_null());
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
[INFO] [stdout]    --> src/single.rs:124:20
[INFO] [stdout]     |
[INFO] [stdout] 124 |     debug_assert!(!destination.as_ptr().is_null());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
[INFO] [stdout]    --> src/single.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 |     debug_assert!(!destination.as_ptr().is_null());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fixed-slice-vec` (lib) due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7aab8950f65b5ef15787626437fa9d64a597848e09ccaff054829bf2060b40fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aab8950f65b5ef15787626437fa9d64a597848e09ccaff054829bf2060b40fe", kill_on_drop: false }`
[INFO] [stdout] 7aab8950f65b5ef15787626437fa9d64a597848e09ccaff054829bf2060b40fe
