[INFO] crate backtracking_iterator 0.4.4 is already in cache
[INFO] testing backtracking_iterator-0.4.4 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate backtracking_iterator 0.4.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate backtracking_iterator 0.4.4 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtracking_iterator 0.4.4
[INFO] finished tweaking crates.io crate backtracking_iterator 0.4.4
[INFO] tweaked toml for crates.io crate backtracking_iterator 0.4.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4aa93a5a8aaec62ccc92d03d7c0a9e646b50b9a02a765a26e01c57d7b52203aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4aa93a5a8aaec62ccc92d03d7c0a9e646b50b9a02a765a26e01c57d7b52203aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aa93a5a8aaec62ccc92d03d7c0a9e646b50b9a02a765a26e01c57d7b52203aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aa93a5a8aaec62ccc92d03d7c0a9e646b50b9a02a765a26e01c57d7b52203aa", kill_on_drop: false }`
[INFO] [stdout] 4aa93a5a8aaec62ccc92d03d7c0a9e646b50b9a02a765a26e01c57d7b52203aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 608629ca9747b28292468293ca44a07b9bc8230292e14fb7c13b8748f2b1776f
[INFO] running `Command { std: "docker" "start" "-a" "608629ca9747b28292468293ca44a07b9bc8230292e14fb7c13b8748f2b1776f", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtracking_iterator v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BacktrackingState`
[INFO] [stdout]   --> src/concurrent.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::{BacktrackingState, BacktrackingIterator};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]   --> src/concurrent.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]    --> src/concurrent.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]     |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "608629ca9747b28292468293ca44a07b9bc8230292e14fb7c13b8748f2b1776f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "608629ca9747b28292468293ca44a07b9bc8230292e14fb7c13b8748f2b1776f", kill_on_drop: false }`
[INFO] [stdout] 608629ca9747b28292468293ca44a07b9bc8230292e14fb7c13b8748f2b1776f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d08c4430420d21fa30cb78a6714234bf4bcd338f06be6a36c4aa6bddc6b00870
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d08c4430420d21fa30cb78a6714234bf4bcd338f06be6a36c4aa6bddc6b00870", kill_on_drop: false }`
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BacktrackingState`
[INFO] [stdout]   --> src/concurrent.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::{BacktrackingState, BacktrackingIterator};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]   --> src/concurrent.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]    --> src/concurrent.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]     |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling backtracking_iterator v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/copying.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Backtracking` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progressing` is imported redundantly
[INFO] [stdout]   --> src/referencing.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | use super::BacktrackingState::*;
[INFO] [stdout]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BacktrackingState`
[INFO] [stdout]   --> src/concurrent.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::{BacktrackingState, BacktrackingIterator};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]   --> src/concurrent.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]    |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stdout]    --> src/concurrent.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use crate::{Backtracking, Progressing};
[INFO] [stdout]     |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "d08c4430420d21fa30cb78a6714234bf4bcd338f06be6a36c4aa6bddc6b00870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08c4430420d21fa30cb78a6714234bf4bcd338f06be6a36c4aa6bddc6b00870", kill_on_drop: false }`
[INFO] [stdout] d08c4430420d21fa30cb78a6714234bf4bcd338f06be6a36c4aa6bddc6b00870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f14e1a49b5d9cef6c2fbd864ef7d16b7db8ab2f5272ce2482bc883631f7b98c9
[INFO] running `Command { std: "docker" "start" "-a" "f14e1a49b5d9cef6c2fbd864ef7d16b7db8ab2f5272ce2482bc883631f7b98c9", kill_on_drop: false }`
[INFO] [stderr] warning: the item `Backtracking` is imported redundantly
[INFO] [stderr]   --> src/copying.rs:38:17
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Progressing` is imported redundantly
[INFO] [stderr]   --> src/copying.rs:38:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Backtracking` is imported redundantly
[INFO] [stderr]   --> src/referencing.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Progressing` is imported redundantly
[INFO] [stderr]   --> src/referencing.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BacktrackingState`
[INFO] [stderr]   --> src/concurrent.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 | use super::{BacktrackingState, BacktrackingIterator};
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stderr]   --> src/concurrent.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stderr]    --> src/concurrent.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]     |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Backtracking` is imported redundantly
[INFO] [stderr]   --> src/copying.rs:38:17
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Progressing` is imported redundantly
[INFO] [stderr]   --> src/copying.rs:38:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 38 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Backtracking` is imported redundantly
[INFO] [stderr]   --> src/referencing.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Backtracking` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Progressing` is imported redundantly
[INFO] [stderr]   --> src/referencing.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | use super::BacktrackingState::*;
[INFO] [stderr]    |     --------------------------- the item `Progressing` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 57 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BacktrackingState`
[INFO] [stderr]   --> src/concurrent.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 | use super::{BacktrackingState, BacktrackingIterator};
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stderr]   --> src/concurrent.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]    |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtracking`, `Progressing`
[INFO] [stderr]    --> src/concurrent.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |     use crate::{Backtracking, Progressing};
[INFO] [stderr]     |                 ^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/backtracking_iterator-4772ab18bfc5dc6b
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::backwalk_test ... ok
[INFO] [stdout] test concurrent::tests::dont_need_clone_test ... ok
[INFO] [stdout] test concurrent::tests::many_iter_clone_test ... ok
[INFO] [stdout] test tests::basic_test ... ok
[INFO] [stdout] test concurrent::tests::many_iter_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests backtracking_iterator
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/traits.rs - traits::BacktrackingIterator::start_again (line 101) ... ok
[INFO] [stdout] test src/record.rs - record::BacktrackingRecorder<Iter>::drain_history (line 53) ... ok
[INFO] [stdout] test src/traits.rs - traits::BacktrackingIterator::backtrack (line 77) ... ok
[INFO] [stdout] test src/traits.rs - traits::Record::forget (line 36) ... ok
[INFO] [stdout] test src/traits.rs - traits::Walkbackable::walk_back (line 155) ... ok
[INFO] [stdout] test src/traits.rs - traits::BacktrackingIterator::peek (line 121) ... ok
[INFO] [stdout] test src/record.rs - record::BacktrackingRecorder<Iter>::into_iter (line 83) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f14e1a49b5d9cef6c2fbd864ef7d16b7db8ab2f5272ce2482bc883631f7b98c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f14e1a49b5d9cef6c2fbd864ef7d16b7db8ab2f5272ce2482bc883631f7b98c9", kill_on_drop: false }`
[INFO] [stdout] f14e1a49b5d9cef6c2fbd864ef7d16b7db8ab2f5272ce2482bc883631f7b98c9