[INFO] fetching crate imbl-sized-chunks 0.1.1...
[INFO] checking imbl-sized-chunks-0.1.1 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate imbl-sized-chunks 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate imbl-sized-chunks 0.1.1 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imbl-sized-chunks 0.1.1
[INFO] finished tweaking crates.io crate imbl-sized-chunks 0.1.1
[INFO] tweaked toml for crates.io crate imbl-sized-chunks 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded refpool v0.4.3
[INFO] [stderr]   Downloaded bitmaps v3.2.1
[INFO] [stderr]   Downloaded array-ops v0.1.0
[INFO] [stderr]   Downloaded rand_xoshiro v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c43818e9a1e76563bde77ac03b1d2092a40bbc6d4154e0378481cb774ed66ec5
[INFO] running `Command { std: "docker" "start" "-a" "c43818e9a1e76563bde77ac03b1d2092a40bbc6d4154e0378481cb774ed66ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c43818e9a1e76563bde77ac03b1d2092a40bbc6d4154e0378481cb774ed66ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c43818e9a1e76563bde77ac03b1d2092a40bbc6d4154e0378481cb774ed66ec5", kill_on_drop: false }`
[INFO] [stdout] c43818e9a1e76563bde77ac03b1d2092a40bbc6d4154e0378481cb774ed66ec5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb35cb4d91f939734e3dd1a8114a8f7a9a55c32ef4e951f114cefef2fc58539e
[INFO] running `Command { std: "docker" "start" "-a" "bb35cb4d91f939734e3dd1a8114a8f7a9a55c32ef4e951f114cefef2fc58539e", kill_on_drop: false }`
[INFO] [stderr]     Checking bitmaps v3.2.1
[INFO] [stderr]     Checking imbl-sized-chunks v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/inline_array/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use core::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/sized_chunk/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/sparse_chunk/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `FromIterator` is imported redundantly
[INFO] [stdout]    --> src/inline_array/mod.rs:13:5
[INFO] [stdout]     |
[INFO] [stdout] 13  | use core::iter::FromIterator;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `FromIterator` is already defined here
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:100:24
[INFO] [stdout]     |
[INFO] [stdout] 100 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/sized_chunk/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/sparse_chunk/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `FromIterator` is imported redundantly
[INFO] [stdout]    --> src/sparse_chunk/iter.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use std::iter::FromIterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:671:25
[INFO] [stdout]     |
[INFO] [stdout] 671 |         struct BigAlign(u8);
[INFO] [stdout]     |                -------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 671 |         struct BigAlign(());
[INFO] [stdout]     |                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:673:28
[INFO] [stdout]     |
[INFO] [stdout] 673 |         struct MediumAlign(u8);
[INFO] [stdout]     |                ----------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 673 |         struct MediumAlign(());
[INFO] [stdout]     |                            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:684:25
[INFO] [stdout]     |
[INFO] [stdout] 684 |         struct BigAlign(usize);
[INFO] [stdout]     |                -------- ^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 684 |         struct BigAlign(());
[INFO] [stdout]     |                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:701:25
[INFO] [stdout]     |
[INFO] [stdout] 701 |         struct BigAlign(u8);
[INFO] [stdout]     |                -------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 701 |         struct BigAlign(());
[INFO] [stdout]     |                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:718:25
[INFO] [stdout]     |
[INFO] [stdout] 718 |         struct BigAlign([u8; 64]);
[INFO] [stdout]     |                -------- ^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 718 |         struct BigAlign(());
[INFO] [stdout]     |                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]    --> src/inline_array/mod.rs:720:28
[INFO] [stdout]     |
[INFO] [stdout] 720 |         struct BiggerAlign(u8);
[INFO] [stdout]     |                ----------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 720 |         struct BiggerAlign(());
[INFO] [stdout]     |                            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imbl-sized-chunks` (lib test) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "bb35cb4d91f939734e3dd1a8114a8f7a9a55c32ef4e951f114cefef2fc58539e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb35cb4d91f939734e3dd1a8114a8f7a9a55c32ef4e951f114cefef2fc58539e", kill_on_drop: false }`
[INFO] [stdout] bb35cb4d91f939734e3dd1a8114a8f7a9a55c32ef4e951f114cefef2fc58539e
