[INFO] fetching crate ipcheck-rs 1.0.1...
[INFO] testing ipcheck-rs-1.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate ipcheck-rs 1.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ipcheck-rs 1.0.1
[INFO] finished tweaking crates.io crate ipcheck-rs 1.0.1
[INFO] tweaked toml for crates.io crate ipcheck-rs 1.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ipcheck-rs 1.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ipcheck-rs 1.0.1 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v1.0.13
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded pest_generator v2.7.14
[INFO] [stderr]   Downloaded serde v1.0.215
[INFO] [stderr]   Downloaded cpufeatures v0.2.16
[INFO] [stderr]   Downloaded typenum v1.17.0
[INFO] [stderr]   Downloaded serde_derive v1.0.215
[INFO] [stderr]   Downloaded pest_meta v2.7.14
[INFO] [stderr]   Downloaded handlebars v6.2.0
[INFO] [stderr]   Downloaded pest v2.7.14
[INFO] [stderr]   Downloaded pest_derive v2.7.14
[INFO] [stderr]   Downloaded serde_json v1.0.133
[INFO] [stderr]   Downloaded syn v2.0.89
[INFO] [stderr]   Downloaded libc v0.2.164
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2bd8591e06b3c3ccc28d649122b7aaa98d8e7dc63a22aeadbccb1741ab69f3c
[INFO] running `Command { std: "docker" "start" "-a" "b2bd8591e06b3c3ccc28d649122b7aaa98d8e7dc63a22aeadbccb1741ab69f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2bd8591e06b3c3ccc28d649122b7aaa98d8e7dc63a22aeadbccb1741ab69f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2bd8591e06b3c3ccc28d649122b7aaa98d8e7dc63a22aeadbccb1741ab69f3c", kill_on_drop: false }`
[INFO] [stdout] b2bd8591e06b3c3ccc28d649122b7aaa98d8e7dc63a22aeadbccb1741ab69f3c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d640403b4fde9f98061c55348ef7060c3414c26657a5c80c6b39d11ff461d69
[INFO] running `Command { std: "docker" "start" "-a" "1d640403b4fde9f98061c55348ef7060c3414c26657a5c80c6b39d11ff461d69", kill_on_drop: false }`
[INFO] [stderr]    Compiling ipnet v2.10.1
[INFO] [stderr]    Compiling ipcheck-rs v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:256:17
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<N> {
[INFO] [stdout]     |                 ^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<'_, N> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "1d640403b4fde9f98061c55348ef7060c3414c26657a5c80c6b39d11ff461d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d640403b4fde9f98061c55348ef7060c3414c26657a5c80c6b39d11ff461d69", kill_on_drop: false }`
[INFO] [stdout] 1d640403b4fde9f98061c55348ef7060c3414c26657a5c80c6b39d11ff461d69
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8800364ecb67707baf9ca2e0ab3f20b7f6cdf71c0eb1cc53df3fa889c9ba42c
[INFO] running `Command { std: "docker" "start" "-a" "f8800364ecb67707baf9ca2e0ab3f20b7f6cdf71c0eb1cc53df3fa889c9ba42c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:256:17
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<N> {
[INFO] [stdout]     |                 ^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<'_, N> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling ipcheck-rs v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:256:17
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<N> {
[INFO] [stdout]     |                 ^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn iter(&self) -> IpRangeIter<'_, N> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.54s
[INFO] running `Command { std: "docker" "inspect" "f8800364ecb67707baf9ca2e0ab3f20b7f6cdf71c0eb1cc53df3fa889c9ba42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8800364ecb67707baf9ca2e0ab3f20b7f6cdf71c0eb1cc53df3fa889c9ba42c", kill_on_drop: false }`
[INFO] [stdout] f8800364ecb67707baf9ca2e0ab3f20b7f6cdf71c0eb1cc53df3fa889c9ba42c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf649e3ef47608319f843115e1f3e3b0d94250c734bb04e35aed7d162c05f31a
[INFO] running `Command { std: "docker" "start" "-a" "cf649e3ef47608319f843115e1f3e3b0d94250c734bb04e35aed7d162c05f31a", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:256:17
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn iter(&self) -> IpRangeIter<N> {
[INFO] [stderr]     |                 ^^^^^     -------------- the same lifetime is hidden here
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn iter(&self) -> IpRangeIter<'_, N> {
[INFO] [stderr]     |                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: `ipcheck-rs` (lib) generated 1 warning
[INFO] [stderr] warning: `ipcheck-rs` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ipcheck_rs-825e847b926740aa)
[INFO] [stdout] 
[INFO] [stdout] running 52 tests
[INFO] [stdout] test tests::add_multiple_networks_joint2 ... ok
[INFO] [stdout] test tests::add_multiple_networks_joint3 ... ok
[INFO] [stdout] test tests::add_multiple_networks_joint1 ... ok
[INFO] [stdout] test tests::add_multiple_networks_disjoint ... ok
[INFO] [stdout] test tests::add_multiple_networks_joint5 ... ok
[INFO] [stdout] test tests::add_multiple_networks_joint6 ... ok
[INFO] [stdout] test tests::add_to_all_zeros ... ok
[INFO] [stdout] test tests::contains_ip_boundary1 ... ok
[INFO] [stdout] test tests::contains_ip_boundary2 ... ok
[INFO] [stdout] test tests::contains_ip_with_many_networks ... ok
[INFO] [stdout] test tests::contains_ip_with_one_network ... ok
[INFO] [stdout] test tests::contains_network_with_many_networks ... ok
[INFO] [stdout] test tests::contains_network_with_one_network ... ok
[INFO] [stdout] test tests::exclude_disjoint ... ok
[INFO] [stdout] test tests::find_network_boundary1 ... ok
[INFO] [stdout] test tests::find_network_boundary2 ... ok
[INFO] [stdout] test tests::exclude_split1 ... ok
[INFO] [stdout] test tests::find_network_with_one_network ... ok
[INFO] [stdout] test tests::contains_network_boundary2 ... ok
[INFO] [stdout] test tests::find_network_with_many_networks ... ok
[INFO] [stdout] test tests::exclude_split2 ... ok
[INFO] [stdout] test tests::contains_network_boundary1 ... ok
[INFO] [stdout] test tests::exclude_identical ... ok
[INFO] [stdout] test tests::exclude_larger ... ok
[INFO] [stdout] test tests::intersect_joint4 ... ok
[INFO] [stdout] test tests::intersect_joint3 ... ok
[INFO] [stdout] test tests::debug_fmt ... ok
[INFO] [stdout] test tests::iter_ipv4 ... ok
[INFO] [stdout] test tests::intersect_disjoint ... ok
[INFO] [stdout] test tests::iter_ipv6 ... ok
[INFO] [stdout] test tests::merge_sequent2 ... ok
[INFO] [stdout] test tests::merge_disjoint ... ok
[INFO] [stdout] test tests::merge_empty2 ... ok
[INFO] [stdout] test tests::merge_joint1 ... ok
[INFO] [stdout] test tests::merge_joint2 ... ok
[INFO] [stdout] test tests::merge_empty1 ... ok
[INFO] [stdout] test tests::parse_invalid_networks ... ok
[INFO] [stdout] test tests::remove_all ... ok
[INFO] [stdout] test tests::remove_networks_split1 ... ok
[INFO] [stdout] test tests::remove_networks_split3 ... ok
[INFO] [stdout] test tests::remove_networks_no_split ... ok
[INFO] [stdout] test tests::super_network_boundary1 ... ok
[INFO] [stdout] test tests::super_network_boundary2 ... ok
[INFO] [stdout] test tests::simplify ... ok
[INFO] [stdout] test tests::super_network_with_many_networks ... ok
[INFO] [stdout] test tests::remove_networks_split2 ... ok
[INFO] [stdout] test tests::super_network_with_one_network ... ok
[INFO] [stdout] test tests::merge_sequent1 ... ok
[INFO] [stdout] test tests::add_multiple_networks_joint4 ... ok
[INFO] [stdout] test tests::intersect_joint2 ... ok
[INFO] [stdout] test tests::add_single_network ... ok
[INFO] [stderr]    Doc-tests ipcheck_rs
[INFO] [stdout] test tests::intersect_joint1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 52 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - IpRange<N>::is_empty (line 168) ... FAILED
[INFO] [stdout] test src/lib.rs - IpRange<N>::add (line 113) ... FAILED
[INFO] [stdout] test src/lib.rs - IpRange<N>::simplify (line 185) ... FAILED
[INFO] [stdout] test src/lib.rs - IpRange (line 62) ... FAILED
[INFO] [stdout] test src/lib.rs - IpRange<N>::remove (line 146) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 17) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - IpRange<N>::is_empty (line 168) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `iprange`
[INFO] [stdout]  --> src/lib.rs:170:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use iprange::IpRange;
[INFO] [stdout]   |     ^^^^^^^ use of unresolved module or unlinked crate `iprange`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `iprange`, use `cargo add iprange` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - IpRange<N>::add (line 113) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `iprange`
[INFO] [stdout]  --> src/lib.rs:114:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate iprange;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - IpRange<N>::simplify (line 185) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `iprange`
[INFO] [stdout]  --> src/lib.rs:186:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate iprange;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - IpRange (line 62) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `iprange`
[INFO] [stdout]  --> src/lib.rs:63:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use iprange::IpRange;
[INFO] [stdout]   |     ^^^^^^^ use of unresolved module or unlinked crate `iprange`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `iprange`, use `cargo add iprange` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - IpRange<N>::remove (line 146) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `iprange`
[INFO] [stdout]  --> src/lib.rs:147:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate iprange;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 17) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `iprange`
[INFO] [stdout]  --> src/lib.rs:18:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate iprange;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 17)
[INFO] [stdout]     src/lib.rs - IpRange (line 62)
[INFO] [stdout]     src/lib.rs - IpRange<N>::add (line 113)
[INFO] [stdout]     src/lib.rs - IpRange<N>::is_empty (line 168)
[INFO] [stdout]     src/lib.rs - IpRange<N>::remove (line 146)
[INFO] [stdout]     src/lib.rs - IpRange<N>::simplify (line 185)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "cf649e3ef47608319f843115e1f3e3b0d94250c734bb04e35aed7d162c05f31a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf649e3ef47608319f843115e1f3e3b0d94250c734bb04e35aed7d162c05f31a", kill_on_drop: false }`
[INFO] [stdout] cf649e3ef47608319f843115e1f3e3b0d94250c734bb04e35aed7d162c05f31a
