[INFO] cloning repository https://github.com/aogier/keep-a-changelog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aogier/keep-a-changelog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faogier%2Fkeep-a-changelog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faogier%2Fkeep-a-changelog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b2411b71766f141e2598dc5da07669c1cb511ca
[INFO] testing aogier/keep-a-changelog against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faogier%2Fkeep-a-changelog" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aogier/keep-a-changelog on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aogier/keep-a-changelog
[INFO] finished tweaking git repo https://github.com/aogier/keep-a-changelog
[INFO] tweaked toml for git repo https://github.com/aogier/keep-a-changelog written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/aogier/keep-a-changelog already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4776dc07d263c858459ff366598199f66485ded101ac34f620cbc1d137adcffa
[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" "4776dc07d263c858459ff366598199f66485ded101ac34f620cbc1d137adcffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4776dc07d263c858459ff366598199f66485ded101ac34f620cbc1d137adcffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4776dc07d263c858459ff366598199f66485ded101ac34f620cbc1d137adcffa", kill_on_drop: false }`
[INFO] [stdout] 4776dc07d263c858459ff366598199f66485ded101ac34f620cbc1d137adcffa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d09f3509d4a3423f96ac5ddacb7e8eac544bcf994ccc692a87bc9500e570d10
[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" "8d09f3509d4a3423f96ac5ddacb7e8eac544bcf994ccc692a87bc9500e570d10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling pulldown-cmark v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling aho-corasick v0.7.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling changelog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `InlineStr`, `html`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pulldown_cmark::{html, CowStr, Event, InlineStr, Options, Parser, Tag};
[INFO] [stdout]   |                      ^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `InlineStr`
[INFO] [stdout]  --> src/markdown.rs:9:55
[INFO] [stdout]   |
[INFO] [stdout] 9 | use pulldown_cmark::{Alignment, CodeBlockKind, Event, InlineStr, LinkType, Tag};
[INFO] [stdout]   |                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `norm`
[INFO] [stdout]   --> src/main.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(&|norm, raw| None),
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_norm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/main.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(&|norm, raw| None),
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]    --> src/markdown.rs:285:40
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Tag::Link(LinkType::Email, dest, title) => {
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]    --> src/markdown.rs:294:41
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Tag::Link(_link_type, dest, title) => {
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]    --> src/markdown.rs:302:36
[INFO] [stdout]     |
[INFO] [stdout] 302 |             Tag::Image(_link_type, dest, title) => {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string_buffer`
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     string_buffer: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `enqueue_item`
[INFO] [stdout]   --> src/main.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn enqueue_item(&mut self, item: &'c String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `push_html`
[INFO] [stdout]    --> src/markdown.rs:453:8
[INFO] [stdout]     |
[INFO] [stdout] 453 | pub fn push_html<'a, I>(s: &mut String, iter: I)
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.88s
[INFO] running `Command { std: "docker" "inspect" "8d09f3509d4a3423f96ac5ddacb7e8eac544bcf994ccc692a87bc9500e570d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d09f3509d4a3423f96ac5ddacb7e8eac544bcf994ccc692a87bc9500e570d10", kill_on_drop: false }`
[INFO] [stdout] 8d09f3509d4a3423f96ac5ddacb7e8eac544bcf994ccc692a87bc9500e570d10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 841f1c0ca2027a8779b4e3fa51e86c6f2c42b872b0f53a03927d04f3fe9ef852
[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" "841f1c0ca2027a8779b4e3fa51e86c6f2c42b872b0f53a03927d04f3fe9ef852", kill_on_drop: false }`
[INFO] [stderr]    Compiling changelog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `InlineStr`, `html`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pulldown_cmark::{html, CowStr, Event, InlineStr, Options, Parser, Tag};
[INFO] [stdout]   |                      ^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `InlineStr`
[INFO] [stdout]  --> src/markdown.rs:9:55
[INFO] [stdout]   |
[INFO] [stdout] 9 | use pulldown_cmark::{Alignment, CodeBlockKind, Event, InlineStr, LinkType, Tag};
[INFO] [stdout]   |                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `norm`
[INFO] [stdout]   --> src/main.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(&|norm, raw| None),
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_norm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/main.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(&|norm, raw| None),
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]    --> src/markdown.rs:285:40
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Tag::Link(LinkType::Email, dest, title) => {
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]    --> src/markdown.rs:294:41
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Tag::Link(_link_type, dest, title) => {
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]    --> src/markdown.rs:302:36
[INFO] [stdout]     |
[INFO] [stdout] 302 |             Tag::Image(_link_type, dest, title) => {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string_buffer`
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     string_buffer: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `enqueue_item`
[INFO] [stdout]   --> src/main.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn enqueue_item(&mut self, item: &'c String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `push_html`
[INFO] [stdout]    --> src/markdown.rs:453:8
[INFO] [stdout]     |
[INFO] [stdout] 453 | pub fn push_html<'a, I>(s: &mut String, iter: I)
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "841f1c0ca2027a8779b4e3fa51e86c6f2c42b872b0f53a03927d04f3fe9ef852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "841f1c0ca2027a8779b4e3fa51e86c6f2c42b872b0f53a03927d04f3fe9ef852", kill_on_drop: false }`
[INFO] [stdout] 841f1c0ca2027a8779b4e3fa51e86c6f2c42b872b0f53a03927d04f3fe9ef852
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 192c2a2d9ed44f545cffe6dbf4e7c31e46923b173fd9eac00b6b49f1e094d3a6
[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" "192c2a2d9ed44f545cffe6dbf4e7c31e46923b173fd9eac00b6b49f1e094d3a6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `InlineStr`, `html`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 2 | use pulldown_cmark::{html, CowStr, Event, InlineStr, Options, Parser, Tag};
[INFO] [stdout] 
[INFO] [stderr]   |                      ^^^^                 ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `InlineStr`
[INFO] [stderr]  --> src/markdown.rs:9:55
[INFO] [stderr]   |
[INFO] [stderr] 9 | use pulldown_cmark::{Alignment, CodeBlockKind, Event, InlineStr, LinkType, Tag};
[INFO] [stderr]   |                                                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `norm`
[INFO] [stderr]   --> src/main.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |             Some(&|norm, raw| None),
[INFO] [stderr]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_norm`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw`
[INFO] [stderr]   --> src/main.rs:39:26
[INFO] [stderr]    |
[INFO] [stderr] 39 |             Some(&|norm, raw| None),
[INFO] [stderr]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dest`
[INFO] [stderr]    --> src/markdown.rs:285:40
[INFO] [stderr]     |
[INFO] [stderr] 285 |             Tag::Link(LinkType::Email, dest, title) => {
[INFO] [stderr]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `title`
[INFO] [stderr]    --> src/markdown.rs:294:41
[INFO] [stderr]     |
[INFO] [stderr] 294 |             Tag::Link(_link_type, dest, title) => {
[INFO] [stderr]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dest`
[INFO] [stderr]    --> src/markdown.rs:302:36
[INFO] [stderr]     |
[INFO] [stderr] 302 |             Tag::Image(_link_type, dest, title) => {
[INFO] [stderr]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `string_buffer`
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     string_buffer: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `enqueue_item`
[INFO] [stderr]   --> src/main.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn enqueue_item(&mut self, item: &'c String) {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `push_html`
[INFO] [stderr]    --> src/markdown.rs:453:8
[INFO] [stderr]     |
[INFO] [stderr] 453 | pub fn push_html<'a, I>(s: &mut String, iter: I)
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `changelog` (bin "changelog" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/changelog-5697be356e69d9c5)
[INFO] running `Command { std: "docker" "inspect" "192c2a2d9ed44f545cffe6dbf4e7c31e46923b173fd9eac00b6b49f1e094d3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "192c2a2d9ed44f545cffe6dbf4e7c31e46923b173fd9eac00b6b49f1e094d3a6", kill_on_drop: false }`
[INFO] [stdout] 192c2a2d9ed44f545cffe6dbf4e7c31e46923b173fd9eac00b6b49f1e094d3a6