[INFO] fetching crate below-view 0.7.1...
[INFO] checking below-view-0.7.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate below-view 0.7.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate below-view 0.7.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate below-view 0.7.1
[INFO] finished tweaking crates.io crate below-view 0.7.1
[INFO] tweaked toml for crates.io crate below-view 0.7.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 183 packages
[INFO] [stderr]       Adding below-btrfs v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below-common v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below-gpu-stats v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below-model v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below-render v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below-store v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding below_derive v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cgroupfs v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding crossterm v0.23.2 (latest: v0.27.0)
[INFO] [stderr]       Adding crossterm v0.25.0 (latest: v0.27.0)
[INFO] [stderr]       Adding erased-serde v0.3.31 (latest: v0.4.4)
[INFO] [stderr]       Adding fb_procfs v0.7.1 (latest: v0.8.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hostname v0.3.1 (latest: v0.4.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding memmap2 v0.5.10 (latest: v0.9.4)
[INFO] [stderr]       Adding memoffset v0.6.5 (latest: v0.9.1)
[INFO] [stderr]       Adding nix v0.25.1 (latest: v0.28.0)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding remove_dir_all v0.5.3 (latest: v0.8.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding toml v0.7.8 (latest: v0.8.12)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[INFO] [stderr]       Adding zstd-safe v5.0.2+zstd.1.5.2 (latest: v7.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_macro v0.20.8
[INFO] [stderr]   Downloaded cursive_buffered_backend v0.6.1
[INFO] [stderr]   Downloaded slog v2.7.0
[INFO] [stderr]   Downloaded enumset_derive v0.8.1
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded darling v0.20.8
[INFO] [stderr]   Downloaded enumset v1.1.3
[INFO] [stderr]   Downloaded toml v0.7.8
[INFO] [stderr]   Downloaded below-gpu-stats v0.7.1
[INFO] [stderr]   Downloaded num_threads v0.1.7
[INFO] [stderr]   Downloaded below-render v0.7.1
[INFO] [stderr]   Downloaded below_derive v0.7.1
[INFO] [stderr]   Downloaded openat v0.1.21
[INFO] [stderr]   Downloaded zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]   Downloaded slog-term v2.9.1
[INFO] [stderr]   Downloaded below-btrfs v0.7.1
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded crossterm v0.23.2
[INFO] [stderr]   Downloaded crossterm v0.25.0
[INFO] [stderr]   Downloaded below-model v0.7.1
[INFO] [stderr]   Downloaded signal-hook v0.3.17
[INFO] [stderr]   Downloaded cursive v0.20.0
[INFO] [stderr]   Downloaded cursive_core v0.3.7
[INFO] [stderr]   Downloaded darling_core v0.20.8
[INFO] [stderr]   Downloaded cgroupfs v0.7.1
[INFO] [stderr]   Downloaded below-store v0.7.1
[INFO] [stderr]   Downloaded enum-map v2.7.3
[INFO] [stderr]   Downloaded below-common v0.7.1
[INFO] [stderr]   Downloaded fb_procfs v0.7.1
[INFO] [stderr]   Downloaded os_info v3.8.2
[INFO] [stderr]   Downloaded crossterm_winapi v0.9.1
[INFO] [stderr]   Downloaded enum-map-derive v0.17.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ee8b09311b97d7c2fbaea5dcf69f63d9592e15359d9ac82757737eb7cf1456e
[INFO] running `Command { std: "docker" "start" "-a" "1ee8b09311b97d7c2fbaea5dcf69f63d9592e15359d9ac82757737eb7cf1456e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ee8b09311b97d7c2fbaea5dcf69f63d9592e15359d9ac82757737eb7cf1456e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ee8b09311b97d7c2fbaea5dcf69f63d9592e15359d9ac82757737eb7cf1456e", kill_on_drop: false }`
[INFO] [stdout] 1ee8b09311b97d7c2fbaea5dcf69f63d9592e15359d9ac82757737eb7cf1456e
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01688d00cad92af12d5799982831b3c23e2400c309db7b4bf9d5ea1a25968b52
[INFO] running `Command { std: "docker" "start" "-a" "01688d00cad92af12d5799982831b3c23e2400c309db7b4bf9d5ea1a25968b52", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling time-macros v0.2.17
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_threads v0.1.7
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking openat v0.1.21
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking winnow v0.5.40
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]    Compiling darling_core v0.20.8
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling enum-map-derive v0.17.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking enum-map v2.7.3
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling darling v0.20.8
[INFO] [stderr]    Compiling enumset_derive v0.8.1
[INFO] [stderr]    Compiling below_derive v0.7.1
[INFO] [stderr]     Checking enumset v1.1.3
[INFO] [stderr]     Checking cursive_core v0.3.7
[INFO] [stderr]     Checking cursive v0.20.0
[INFO] [stderr]     Checking cursive_buffered_backend v0.6.1
[INFO] [stderr]     Checking erased-serde v0.3.31
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking fb_procfs v0.7.1
[INFO] [stderr]     Checking os_info v3.8.2
[INFO] [stderr]     Checking cgroupfs v0.7.1
[INFO] [stderr]     Checking serde_spanned v0.6.5
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[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking slog-term v2.9.1
[INFO] [stderr]     Checking below-common v0.7.1
[INFO] [stderr]     Checking below-btrfs v0.7.1
[INFO] [stderr]     Checking below-gpu-stats v0.7.1
[INFO] [stderr]     Checking toml v0.7.8
[INFO] [stderr]     Checking below-model v0.7.1
[INFO] [stderr]     Checking below-store v0.7.1
[INFO] [stderr]     Checking below-render v0.7.1
[INFO] [stderr]     Checking below-view v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `RefCell` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:471:9
[INFO] [stdout]     |
[INFO] [stdout] 471 |     use std::cell::RefCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 481 |     use super::*;
[INFO] [stdout]     |         -------- the item `RefCell` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rc` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:473:9
[INFO] [stdout]     |
[INFO] [stdout] 473 |     use std::rc::Rc;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 481 |     use super::*;
[INFO] [stdout]     |         -------- the item `Rc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `MainViewState` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 481 |     use super::*;
[INFO] [stdout]     |         -------- the item `MainViewState` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 485 |     use crate::MainViewState;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ViewMode` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 481 |     use super::*;
[INFO] [stdout]     |         -------- the item `ViewMode` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 486 |     use crate::ViewMode;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ViewState` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:487:9
[INFO] [stdout]     |
[INFO] [stdout] 481 |     use super::*;
[INFO] [stdout]     |         -------- the item `ViewState` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 487 |     use crate::ViewState;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.56s
[INFO] running `Command { std: "docker" "inspect" "01688d00cad92af12d5799982831b3c23e2400c309db7b4bf9d5ea1a25968b52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01688d00cad92af12d5799982831b3c23e2400c309db7b4bf9d5ea1a25968b52", kill_on_drop: false }`
[INFO] [stdout] 01688d00cad92af12d5799982831b3c23e2400c309db7b4bf9d5ea1a25968b52