[INFO] fetching crate tract-nnef 0.20.22...
[INFO] checking tract-nnef-0.20.22 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate tract-nnef 0.20.22 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate tract-nnef 0.20.22 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tract-nnef 0.20.22
[INFO] finished tweaking crates.io crate tract-nnef 0.20.22
[INFO] tweaked toml for crates.io crate tract-nnef 0.20.22 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 119 packages
[INFO] [stderr]       Adding ahash v0.7.8 (latest: v0.8.11)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding derive-new v0.5.9 (latest: v0.6.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding half v2.2.1 (latest: v2.4.0)
[INFO] [stderr]       Adding hashbrown v0.11.2 (latest: v0.14.3)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
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[INFO] [stderr]       Adding string-interner v0.14.0 (latest: v0.15.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding time v0.3.23 (latest: v0.3.34)
[INFO] [stderr]       Adding time-core v0.1.1 (latest: v0.1.2)
[INFO] [stderr]       Adding time-macros v0.2.10 (latest: v0.2.17)
[INFO] [stderr]       Adding tract-core v0.20.22 (latest: v0.21.3)
[INFO] [stderr]       Adding tract-data v0.20.22 (latest: v0.21.3)
[INFO] [stderr]       Adding tract-linalg v0.20.22 (latest: v0.21.3)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded temp-dir v0.1.13
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e92f056bac53e70a881e589885e06938b9ca60dd3c305676fbdf3d949691124c
[INFO] running `Command { std: "docker" "start" "-a" "e92f056bac53e70a881e589885e06938b9ca60dd3c305676fbdf3d949691124c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92f056bac53e70a881e589885e06938b9ca60dd3c305676fbdf3d949691124c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92f056bac53e70a881e589885e06938b9ca60dd3c305676fbdf3d949691124c", kill_on_drop: false }`
[INFO] [stdout] e92f056bac53e70a881e589885e06938b9ca60dd3c305676fbdf3d949691124c
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 948c74a63d1edca16b1c87a52a0b3513f63ce8a13007b10e9eed33c8e04843b4
[INFO] running `Command { std: "docker" "start" "-a" "948c74a63d1edca16b1c87a52a0b3513f63ce8a13007b10e9eed33c8e04843b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling num-traits v0.2.18
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[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling liquid-derive v0.26.4
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling time-macros v0.2.10
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]    Compiling rustfft v6.2.0
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[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]     Checking temp-dir v0.1.13
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking num-integer v0.1.46
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[INFO] [stderr]     Checking half v2.2.1
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[INFO] [stderr]     Checking primal-check v0.3.3
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]     Checking xattr v1.3.1
[INFO] [stderr]     Checking tar v0.4.40
[INFO] [stderr]    Compiling kstring v2.0.0
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]    Compiling liquid-core v0.26.4
[INFO] [stderr]     Checking tract-data v0.20.22
[INFO] [stderr]    Compiling liquid-lib v0.26.4
[INFO] [stderr]    Compiling liquid v0.26.4
[INFO] [stderr]    Compiling tract-linalg v0.20.22
[INFO] [stderr]     Checking tract-core v0.20.22
[INFO] [stderr]     Checking tract-nnef v0.20.22 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]  --> src/ast/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ------------- the item `Itertools` is already imported here
[INFO] [stdout] 2 | use tract_core::internal::*;
[INFO] [stdout] 3 | use tract_itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `map` is imported redundantly
[INFO] [stdout]  --> src/ast/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::combinator::map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use nom::IResult;
[INFO] [stdout] 6 | use nom::{bytes::complete::*, character::complete::*, combinator::*, multi::*, sequence::*};
[INFO] [stdout]   |                                                       ------------- the item `map` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `all_consuming` is imported redundantly
[INFO] [stdout]    --> src/ast/quant.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use super::*;
[INFO] [stdout]     |         -------- the item `all_consuming` is already imported here
[INFO] [stdout] 106 |     use nom::combinator::all_consuming;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/framework.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ast::{Document, Identifier, ProtoModel, QuantFormat};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 6 | use crate::{internal::*, nnef};
[INFO] [stdout]   |             ----------- the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/force_eval.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 |     internal::*,
[INFO] [stdout]   |     ----------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/load.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/qconv.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/nnef/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::ast::QuantFormat;
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]  --> src/ast/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ------------- the item `Itertools` is already imported here
[INFO] [stdout] 2 | use tract_core::internal::*;
[INFO] [stdout] 3 | use tract_itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `map` is imported redundantly
[INFO] [stdout]  --> src/ast/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::combinator::map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use nom::IResult;
[INFO] [stdout] 6 | use nom::{bytes::complete::*, character::complete::*, combinator::*, multi::*, sequence::*};
[INFO] [stdout]   |                                                       ------------- the item `map` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/framework.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ast::{Document, Identifier, ProtoModel, QuantFormat};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 6 | use crate::{internal::*, nnef};
[INFO] [stdout]   |             ----------- the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/force_eval.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 |     internal::*,
[INFO] [stdout]   |     ----------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/load.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/qconv.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/nnef/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::ast::QuantFormat;
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.20s
[INFO] running `Command { std: "docker" "inspect" "948c74a63d1edca16b1c87a52a0b3513f63ce8a13007b10e9eed33c8e04843b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948c74a63d1edca16b1c87a52a0b3513f63ce8a13007b10e9eed33c8e04843b4", kill_on_drop: false }`
[INFO] [stdout] 948c74a63d1edca16b1c87a52a0b3513f63ce8a13007b10e9eed33c8e04843b4
[INFO] checking tract-nnef-0.20.22 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate tract-nnef 0.20.22 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate tract-nnef 0.20.22 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tract-nnef 0.20.22
[INFO] finished tweaking crates.io crate tract-nnef 0.20.22
[INFO] tweaked toml for crates.io crate tract-nnef 0.20.22 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 119 packages
[INFO] [stderr]       Adding ahash v0.7.8 (latest: v0.8.11)
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[INFO] [stderr]       Adding tract-core v0.20.22 (latest: v0.21.3)
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[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88ca279b5b4478119bfb5543b2ead1986d6121b9e415097cfc800813da026d56
[INFO] running `Command { std: "docker" "start" "-a" "88ca279b5b4478119bfb5543b2ead1986d6121b9e415097cfc800813da026d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88ca279b5b4478119bfb5543b2ead1986d6121b9e415097cfc800813da026d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88ca279b5b4478119bfb5543b2ead1986d6121b9e415097cfc800813da026d56", kill_on_drop: false }`
[INFO] [stdout] 88ca279b5b4478119bfb5543b2ead1986d6121b9e415097cfc800813da026d56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fc46576e48146175b7805d0241d738c91649445bb6a65982c1faf9019eeeae6
[INFO] running `Command { std: "docker" "start" "-a" "8fc46576e48146175b7805d0241d738c91649445bb6a65982c1faf9019eeeae6", kill_on_drop: false }`
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[INFO] [stderr]    Compiling tract-linalg v0.20.22
[INFO] [stderr]     Checking tract-core v0.20.22
[INFO] [stderr]     Checking tract-nnef v0.20.22 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]  --> src/ast/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ------------- the item `Itertools` is already imported here
[INFO] [stdout] 2 | use tract_core::internal::*;
[INFO] [stdout] 3 | use tract_itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `map` is imported redundantly
[INFO] [stdout]  --> src/ast/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::combinator::map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use nom::IResult;
[INFO] [stdout] 6 | use nom::{bytes::complete::*, character::complete::*, combinator::*, multi::*, sequence::*};
[INFO] [stdout]   |                                                       ------------- the item `map` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/framework.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ast::{Document, Identifier, ProtoModel, QuantFormat};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 6 | use crate::{internal::*, nnef};
[INFO] [stdout]   |             ----------- the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/force_eval.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 |     internal::*,
[INFO] [stdout]   |     ----------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/load.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/qconv.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/nnef/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::ast::QuantFormat;
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]  --> src/ast/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ------------- the item `Itertools` is already imported here
[INFO] [stdout] 2 | use tract_core::internal::*;
[INFO] [stdout] 3 | use tract_itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `map` is imported redundantly
[INFO] [stdout]  --> src/ast/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::combinator::map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use nom::IResult;
[INFO] [stdout] 6 | use nom::{bytes::complete::*, character::complete::*, combinator::*, multi::*, sequence::*};
[INFO] [stdout]   |                                                       ------------- the item `map` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `all_consuming` is imported redundantly
[INFO] [stdout]    --> src/ast/quant.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use super::*;
[INFO] [stdout]     |         -------- the item `all_consuming` is already imported here
[INFO] [stdout] 106 |     use nom::combinator::all_consuming;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/framework.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ast::{Document, Identifier, ProtoModel, QuantFormat};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 6 | use crate::{internal::*, nnef};
[INFO] [stdout]   |             ----------- the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/force_eval.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 |     internal::*,
[INFO] [stdout]   |     ----------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/load.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/qconv.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/ops/core/scan.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/ops/core/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/ops/nnef/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::ast::QuantFormat;
[INFO] [stdout] 3 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Identifier` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Identifier` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::internal::*;
[INFO] [stdout]   |     ------------------ the item `Value` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use crate::deser::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.63s
[INFO] running `Command { std: "docker" "inspect" "8fc46576e48146175b7805d0241d738c91649445bb6a65982c1faf9019eeeae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc46576e48146175b7805d0241d738c91649445bb6a65982c1faf9019eeeae6", kill_on_drop: false }`
[INFO] [stdout] 8fc46576e48146175b7805d0241d738c91649445bb6a65982c1faf9019eeeae6