[INFO] fetching crate arraylib 0.3.0...
[INFO] checking arraylib-0.3.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate arraylib 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate arraylib 0.3.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arraylib 0.3.0
[INFO] finished tweaking crates.io crate arraylib 0.3.0
[INFO] tweaked toml for crates.io crate arraylib 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fe7e42cd70892a94b5d9cc6ec9acc0f36c281dbc032a89c05bebaed741266a3
[INFO] running `Command { std: "docker" "start" "-a" "6fe7e42cd70892a94b5d9cc6ec9acc0f36c281dbc032a89c05bebaed741266a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fe7e42cd70892a94b5d9cc6ec9acc0f36c281dbc032a89c05bebaed741266a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe7e42cd70892a94b5d9cc6ec9acc0f36c281dbc032a89c05bebaed741266a3", kill_on_drop: false }`
[INFO] [stdout] 6fe7e42cd70892a94b5d9cc6ec9acc0f36c281dbc032a89c05bebaed741266a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d1a7bff47367fe60587c4d2115cc6123bddfca2208a16276ed3bb082ec47a91
[INFO] running `Command { std: "docker" "start" "-a" "1d1a7bff47367fe60587c4d2115cc6123bddfca2208a16276ed3bb082ec47a91", kill_on_drop: false }`
[INFO] [stderr]     Checking arraylib v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:143:37
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let mut iter = [0, 1, 2, 3].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:153:37
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let mut iter = [0, 1, 2, 3].array_windows::<[_; 2]>().rev();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:164:14
[INFO] [stdout]     |
[INFO] [stdout] 164 |             .array_windows::<[_; 2]>()
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:172:43
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:181:43
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:190:43
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item 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 `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "1d1a7bff47367fe60587c4d2115cc6123bddfca2208a16276ed3bb082ec47a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d1a7bff47367fe60587c4d2115cc6123bddfca2208a16276ed3bb082ec47a91", kill_on_drop: false }`
[INFO] [stdout] 1d1a7bff47367fe60587c4d2115cc6123bddfca2208a16276ed3bb082ec47a91