[INFO] fetching crate calf-vec 0.3.1-beta...
[INFO] checking calf-vec-0.3.1-beta against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate calf-vec 0.3.1-beta into /workspace/builds/worker-103/source
[INFO] validating manifest of crates.io crate calf-vec 0.3.1-beta on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate calf-vec 0.3.1-beta
[INFO] finished tweaking crates.io crate calf-vec 0.3.1-beta
[INFO] tweaked toml for crates.io crate calf-vec 0.3.1-beta written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d82a0a5df2c2da5ac3bbfb40796e3ca07df1d07547e64be567a418e8cf0c372
[INFO] running `Command { std: "docker" "start" "-a" "3d82a0a5df2c2da5ac3bbfb40796e3ca07df1d07547e64be567a418e8cf0c372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d82a0a5df2c2da5ac3bbfb40796e3ca07df1d07547e64be567a418e8cf0c372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d82a0a5df2c2da5ac3bbfb40796e3ca07df1d07547e64be567a418e8cf0c372", kill_on_drop: false }`
[INFO] [stdout] 3d82a0a5df2c2da5ac3bbfb40796e3ca07df1d07547e64be567a418e8cf0c372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a0c0bd86b607bf98c403b254638f35dc87af223557f45d2e239f45b7ec79998
[INFO] running `Command { std: "docker" "start" "-a" "6a0c0bd86b607bf98c403b254638f35dc87af223557f45d2e239f45b7ec79998", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking calf-vec v0.3.1-beta (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | #![feature(min_const_generics)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `shrink_to` has been stable since 1.56.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | #![feature(shrink_to)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/generic.rs:332:6
[INFO] [stdout]     |
[INFO] [stdout] 332 |                     &mut (*self.data.stack)[0..len].clone_from_slice(slice);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 332 |                     let _ = &mut (*self.data.stack)[0..len].clone_from_slice(slice);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | #![feature(min_const_generics)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `shrink_to` has been stable since 1.56.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | #![feature(shrink_to)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/generic.rs:332:6
[INFO] [stdout]     |
[INFO] [stdout] 332 |                     &mut (*self.data.stack)[0..len].clone_from_slice(slice);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 332 |                     let _ = &mut (*self.data.stack)[0..len].clone_from_slice(slice);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "6a0c0bd86b607bf98c403b254638f35dc87af223557f45d2e239f45b7ec79998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a0c0bd86b607bf98c403b254638f35dc87af223557f45d2e239f45b7ec79998", kill_on_drop: false }`
[INFO] [stdout] 6a0c0bd86b607bf98c403b254638f35dc87af223557f45d2e239f45b7ec79998