[INFO] cloning repository https://github.com/guppy-rs/guppy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guppy-rs/guppy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguppy-rs%2Fguppy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguppy-rs%2Fguppy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd968ee0b08f046ec753e8f318f9b0bd2d043f0f
[INFO] checking guppy-rs/guppy against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguppy-rs%2Fguppy" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guppy-rs/guppy 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] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/guppy-rs/guppy
[INFO] finished tweaking git repo https://github.com/guppy-rs/guppy
[INFO] tweaked toml for git repo https://github.com/guppy-rs/guppy written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/guppy-rs/guppy already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ea625f6c1c059cbed2be3ba9b8948c34f8f53b13294b1d1241c8cd0789852cf6
[INFO] running `Command { std: "docker" "start" "-a" "ea625f6c1c059cbed2be3ba9b8948c34f8f53b13294b1d1241c8cd0789852cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea625f6c1c059cbed2be3ba9b8948c34f8f53b13294b1d1241c8cd0789852cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea625f6c1c059cbed2be3ba9b8948c34f8f53b13294b1d1241c8cd0789852cf6", kill_on_drop: false }`
[INFO] [stdout] ea625f6c1c059cbed2be3ba9b8948c34f8f53b13294b1d1241c8cd0789852cf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 135738e93baeef872492461549f2ca92d7ab4c901c36007751b8fdb21e12375d
[INFO] running `Command { std: "docker" "start" "-a" "135738e93baeef872492461549f2ca92d7ab4c901c36007751b8fdb21e12375d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking memchr v2.7.1
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[INFO] [stderr]    Compiling thiserror v1.0.56
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[INFO] [stderr]    Compiling rustix v0.38.31
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[INFO] [stderr]     Checking serde-untagged v0.1.5
[INFO] [stderr]     Checking gix-tempfile v11.0.1
[INFO] [stderr]     Checking gix-credentials v0.21.0
[INFO] [stderr]     Checking cargo_metadata v0.18.1
[INFO] [stderr]     Checking rustfix v0.6.1
[INFO] [stderr]     Checking crates-io v0.39.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking gix-lock v11.0.1
[INFO] [stderr]     Checking guppy-summaries v0.7.1 (/opt/rustwide/workdir/guppy-summaries)
[INFO] [stderr]     Checking proptest-ext v0.1.0 (/opt/rustwide/workdir/internal-tools/proptest-ext)
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking gix-attributes v0.20.1
[INFO] [stdout] warning: the item `Serialize` is imported redundantly
[INFO] [stdout]    --> target-spec/src/summaries.rs:228:55
[INFO] [stdout]     |
[INFO] [stdout] 227 |     use super::*;
[INFO] [stdout]     |         -------- the item `Serialize` is already imported here
[INFO] [stdout] 228 |     use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stdout]     |                                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `target_lexicon` is imported redundantly
[INFO] [stdout]  --> target-spec/src/triple.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     target_lexicon,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ the item `target_lexicon` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-ignore v0.9.1
[INFO] [stderr]     Checking gix-transport v0.38.0
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: the item `Predicate` is imported redundantly
[INFO] [stdout]    --> target-spec/src/spec.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |     use super::*;
[INFO] [stdout]     |         -------- the item `Predicate` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 290 |         Predicate, TargetPredicate,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Serialize` is imported redundantly
[INFO] [stdout]    --> target-spec/src/summaries.rs:228:55
[INFO] [stdout]     |
[INFO] [stdout] 227 |     use super::*;
[INFO] [stdout]     |         -------- the item `Serialize` is already imported here
[INFO] [stdout] 228 |     use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stdout]     |                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking target-spec-miette v0.4.0 (/opt/rustwide/workdir/target-spec-miette)
[INFO] [stderr]     Checking gix-pathspec v0.4.1
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking git2 v0.18.1
[INFO] [stderr]     Checking toml v0.8.9
[INFO] [stderr]     Checking guppy v0.17.5 (/opt/rustwide/workdir/guppy)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> guppy/src/graph/feature/graph_impl.rs:26:22
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::{fmt, iter, iter::FromIterator};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[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]   --> guppy/src/graph/graph_impl.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     iter::FromIterator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> guppy/src/metadata_command.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{convert::TryFrom, io, path::PathBuf, process::Command};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> guppy/src/petgraph_support/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DfsPostOrder` is imported redundantly
[INFO] [stdout]  --> guppy/src/petgraph_support/dfs.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     prelude::*,
[INFO] [stdout]   |     ---------- the item `DfsPostOrder` is already imported here
[INFO] [stdout] 6 |     visit::{
[INFO] [stdout] 7 |         DfsPostOrder, IntoEdgeReferences, IntoEdges, IntoEdgesDirected, Reversed,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TargetFeaturesSummary` is imported redundantly
[INFO] [stdout]    --> guppy/src/platform/summaries.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use super::*;
[INFO] [stdout]     |         -------- the item `TargetFeaturesSummary` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 143 |     use target_spec::summaries::TargetFeaturesSummary;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]  --> guppy/src/sorted_set.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt, iter::FromIterator, ops::Deref};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-date v0.8.3
[INFO] [stderr]     Checking cargo-credential v0.4.1
[INFO] [stderr]     Checking pasetors v0.6.8
[INFO] [stderr]     Checking gix-actor v0.28.1
[INFO] [stderr]     Checking gix-protocol v0.41.1
[INFO] [stderr]     Checking gix-object v0.38.0
[INFO] [stderr]     Checking cargo-credential-libsecret v0.4.1
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fixtures v0.1.0 (/opt/rustwide/workdir/fixtures)
[INFO] [stderr]     Checking guppy-cmdlib v0.1.0 (/opt/rustwide/workdir/guppy-cmdlib)
[INFO] [stderr]     Checking hakari v0.17.2 (/opt/rustwide/workdir/tools/hakari)
[INFO] [stderr]     Checking determinator v0.12.0 (/opt/rustwide/workdir/tools/determinator)
[INFO] [stderr]     Checking guppy-benchmarks v0.1.0 (/opt/rustwide/workdir/internal-tools/benchmarks)
[INFO] [stderr]     Checking gix-revwalk v0.9.0
[INFO] [stderr]     Checking gix-ref v0.38.0
[INFO] [stderr]     Checking gix-pack v0.44.0
[INFO] [stderr]     Checking gix-diff v0.37.0
[INFO] [stderr]     Checking gix-filter v0.6.0
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> tools/hakari/src/cli_ops/initialize.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{borrow::Cow, convert::TryInto, error, fmt, io};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TargetFeatures` is imported redundantly
[INFO] [stdout]    --> tools/hakari/src/hakari.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |     use super::*;
[INFO] [stdout]     |         -------- the item `TargetFeatures` is already imported here
[INFO] [stdout] 378 |     use crate::summaries::HakariBuilderSummary;
[INFO] [stdout] 379 |     use guppy::platform::TargetFeatures;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-revision v0.23.0
[INFO] [stderr]     Checking gix-traverse v0.34.0
[INFO] [stderr]     Checking gix-negotiate v0.9.0
[INFO] [stderr]     Checking git2-curl v0.19.0
[INFO] [stderr]     Checking cargo-guppy v0.1.0 (/opt/rustwide/workdir/cargo-guppy)
[INFO] [stderr]     Checking gix-index v0.26.0
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> tools/hakari/src/cli_ops/initialize.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{borrow::Cow, convert::TryInto, error, fmt, io};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TargetFeatures` is imported redundantly
[INFO] [stdout]    --> tools/hakari/src/hakari.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |     use super::*;
[INFO] [stdout]     |         -------- the item `TargetFeatures` is already imported here
[INFO] [stdout] 378 |     use crate::summaries::HakariBuilderSummary;
[INFO] [stdout] 379 |     use guppy::platform::TargetFeatures;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UnifyTargetHost` is imported redundantly
[INFO] [stdout]     --> tools/hakari/src/hakari.rs:1620:9
[INFO] [stdout]      |
[INFO] [stdout] 1619 |     use super::*;
[INFO] [stdout]      |         -------- the item `UnifyTargetHost` is already imported here
[INFO] [stdout] 1620 |     use crate::UnifyTargetHost;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-refspec v0.19.0
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> guppy/src/graph/feature/graph_impl.rs:26:22
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::{fmt, iter, iter::FromIterator};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[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]   --> guppy/src/graph/graph_impl.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     iter::FromIterator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> guppy/src/metadata_command.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{convert::TryFrom, io, path::PathBuf, process::Command};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> guppy/src/petgraph_support/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DfsPostOrder` is imported redundantly
[INFO] [stdout]  --> guppy/src/petgraph_support/dfs.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     prelude::*,
[INFO] [stdout]   |     ---------- the item `DfsPostOrder` is already imported here
[INFO] [stdout] 6 |     visit::{
[INFO] [stdout] 7 |         DfsPostOrder, IntoEdgeReferences, IntoEdges, IntoEdgesDirected, Reversed,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TargetFeaturesSummary` is imported redundantly
[INFO] [stdout]    --> guppy/src/platform/summaries.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use super::*;
[INFO] [stdout]     |         -------- the item `TargetFeaturesSummary` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 143 |     use target_spec::summaries::TargetFeaturesSummary;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]  --> guppy/src/sorted_set.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt, iter::FromIterator, ops::Deref};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeRef` is imported redundantly
[INFO] [stdout]  --> guppy/src/unit_tests/dot_tests.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     prelude::*,
[INFO] [stdout]   |     ---------- the item `EdgeRef` is already imported here
[INFO] [stdout] 7 |     visit::{EdgeRef, NodeRef},
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fixture-manager v0.1.0 (/opt/rustwide/workdir/internal-tools/fixture-manager)
[INFO] [stderr]     Checking cargo-hakari v0.9.29 (/opt/rustwide/workdir/tools/cargo-hakari)
[INFO] [stderr]     Checking gix-config v0.31.0
[INFO] [stderr]     Checking gix-discover v0.26.0
[INFO] [stderr]     Checking gix-worktree v0.27.0
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> tools/cargo-hakari/src/cargo_cli.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{convert::TryInto, env, path::PathBuf};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> tools/cargo-hakari/src/command.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> tools/cargo-hakari/src/helpers.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     use std::convert::TryInto;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> tools/cargo-hakari/src/cargo_cli.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{convert::TryInto, env, path::PathBuf};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> tools/cargo-hakari/src/command.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-odb v0.54.0
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix-submodule v0.5.0
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gix v0.55.2
[INFO] [stderr]     Checking cargo-compare v0.1.0 (/opt/rustwide/workdir/internal-tools/cargo-compare)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.31s
[INFO] running `Command { std: "docker" "inspect" "135738e93baeef872492461549f2ca92d7ab4c901c36007751b8fdb21e12375d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135738e93baeef872492461549f2ca92d7ab4c901c36007751b8fdb21e12375d", kill_on_drop: false }`
[INFO] [stdout] 135738e93baeef872492461549f2ca92d7ab4c901c36007751b8fdb21e12375d