[INFO] updating cached repository https://github.com/andysalerno/toygrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9270fd025b20aa5569eb3dbb54f97353ddd6149c
[INFO] testing andysalerno/toygrep against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandysalerno%2Ftoygrep" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  73% (19/26)   
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[INFO] validating manifest of git repo https://github.com/andysalerno/toygrep on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/andysalerno/toygrep
[INFO] finished tweaking git repo https://github.com/andysalerno/toygrep
[INFO] tweaked toml for git repo https://github.com/andysalerno/toygrep written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/andysalerno/toygrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45836932178c610387385fd55a2bd80b7d3f5bd1eb87321ecd02f2f054e1b1bf
[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" "45836932178c610387385fd55a2bd80b7d3f5bd1eb87321ecd02f2f054e1b1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45836932178c610387385fd55a2bd80b7d3f5bd1eb87321ecd02f2f054e1b1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45836932178c610387385fd55a2bd80b7d3f5bd1eb87321ecd02f2f054e1b1bf", kill_on_drop: false }`
[INFO] [stdout] 45836932178c610387385fd55a2bd80b7d3f5bd1eb87321ecd02f2f054e1b1bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a412ef775494a89c8b00b413c8463866a0ee9187d09e0a77eaaf304b3f6df7a4
[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" "a412ef775494a89c8b00b413c8463866a0ee9187d09e0a77eaaf304b3f6df7a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.6
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling crossbeam-queue v0.2.2
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling pin-project-internal v0.4.20
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling pin-project v0.4.20
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling piper v0.1.3
[INFO] [stderr]    Compiling smol v0.1.11
[INFO] [stderr]    Compiling async-std v1.6.0
[INFO] [stderr]    Compiling toygrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `matcher::RegexMatcherBuilder`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use matcher::RegexMatcherBuilder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry_path`
[INFO] [stdout]   --> src/walker.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let entry_path = entry.unwrap().path();
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entry_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_line_break_byte`
[INFO] [stdout]   --> src/buffer/async_line_buffer.rs:39:19
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub(crate) fn with_line_break_byte(mut self, line_break_byte: u8) -> Self {
[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: `with_start_size_bytes`
[INFO] [stdout]   --> src/buffer/async_line_buffer.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub(crate) fn with_start_size_bytes(mut self, start_size_bytes: usize) -> Self {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RegexMatcherBuilder`
[INFO] [stdout]   --> src/matcher.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub(crate) struct RegexMatcherBuilder<'a> {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/matcher.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub(crate) fn new() -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `for_pattern`
[INFO] [stdout]   --> src/matcher.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub(crate) fn for_pattern(mut self, pattern: &'a str) -> Self {
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `case_insensitive`
[INFO] [stdout]   --> src/matcher.rs:70:19
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub(crate) fn case_insensitive(mut self, is_case_insensitive: bool) -> Self {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_whole_word`
[INFO] [stdout]   --> src/matcher.rs:75:19
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub(crate) fn match_whole_word(mut self, match_whole_word: bool) -> Self {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]   --> src/matcher.rs:80:19
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub(crate) fn build(self) -> RegexMatcher {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `format_word_match`
[INFO] [stdout]   --> src/matcher.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn format_word_match(pattern: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Display`
[INFO] [stdout]   --> src/print.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Display(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_stdin`
[INFO] [stdout]   --> src/target.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(crate) fn is_stdin(&self) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Walker`
[INFO] [stdout]  --> src/walker.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Walker<F>
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/walker.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn new(path: PathBuf, action: F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/walker.rs:20:14
[INFO] [stdout]    |
[INFO] [stdout] 20 |     async fn run(self) {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `walk`
[INFO] [stdout]   --> src/walker.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 |     async fn walk(self) {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "a412ef775494a89c8b00b413c8463866a0ee9187d09e0a77eaaf304b3f6df7a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a412ef775494a89c8b00b413c8463866a0ee9187d09e0a77eaaf304b3f6df7a4", kill_on_drop: false }`
[INFO] [stdout] a412ef775494a89c8b00b413c8463866a0ee9187d09e0a77eaaf304b3f6df7a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--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] 7a5f64905371b26f8a4138b01dc4ce539a441757328fd0a369736d7755f2e34d
[INFO] running `Command { std: "docker" "start" "-a" "7a5f64905371b26f8a4138b01dc4ce539a441757328fd0a369736d7755f2e34d", kill_on_drop: false }`
[INFO] [stderr]    Compiling toygrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `matcher::RegexMatcherBuilder`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use matcher::RegexMatcherBuilder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::future::from_generator::GenFuture<[static generator@src/walker.rs:45:32: 48:18 _]>` cannot be unpinned
[INFO] [stdout]   --> src/walker.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 | /                 Box::new(async {
[INFO] [stdout] 46 | |                     println!("\n\n\nyo!!\n\n");
[INFO] [stdout] 47 | |                     assert!(false, "yo!!!");
[INFO] [stdout] 48 | |                 })
[INFO] [stdout]    | |__________________^ within `impl std::future::Future`, the trait `std::marker::Unpin` is not implemented for `std::future::from_generator::GenFuture<[static generator@src/walker.rs:45:32: 48:18 _]>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required because it appears within the type `impl std::future::Future`
[INFO] [stdout]    = note: required for the cast to the object type `dyn std::future::Future<Output = ()> + std::marker::Send + std::marker::Unpin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toygrep`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7a5f64905371b26f8a4138b01dc4ce539a441757328fd0a369736d7755f2e34d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5f64905371b26f8a4138b01dc4ce539a441757328fd0a369736d7755f2e34d", kill_on_drop: false }`
[INFO] [stdout] 7a5f64905371b26f8a4138b01dc4ce539a441757328fd0a369736d7755f2e34d