[INFO] fetching crate piper 0.1.3...
[INFO] testing piper-0.1.3 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate piper 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate piper 0.1.3 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piper 0.1.3
[INFO] finished tweaking crates.io crate piper 0.1.3
[INFO] tweaked toml for crates.io crate piper 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate piper 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded pin-project v0.4.16
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded pin-project-internal v0.4.16
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", 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] d2e29e2fa99194a7498819f1322b883647995d2848147bd2c5793657796412ec
[INFO] running `Command { std: "docker" "start" "-a" "d2e29e2fa99194a7498819f1322b883647995d2848147bd2c5793657796412ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2e29e2fa99194a7498819f1322b883647995d2848147bd2c5793657796412ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2e29e2fa99194a7498819f1322b883647995d2848147bd2c5793657796412ec", kill_on_drop: false }`
[INFO] [stdout] d2e29e2fa99194a7498819f1322b883647995d2848147bd2c5793657796412ec
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d0006d0d1d664aca218c53a892e7a517be54b076e0f418672e16a6abacd639c
[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" "5d0006d0d1d664aca218c53a892e7a517be54b076e0f418672e16a6abacd639c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling pin-project v0.4.16
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling piper v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/event.rs:66:1
[INFO] [stdout]    |
[INFO] [stdout] 66 | / pub struct Event {
[INFO] [stdout] 67 | |     /// A pointer to heap-allocated inner state.
[INFO] [stdout] 68 | |     ///
[INFO] [stdout] 69 | |     /// This pointer is initially null and gets lazily initialized on first use. Semantically, it
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |     inner: AtomicPtr<Inner>,
[INFO] [stdout] 73 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/event.rs:201:1
[INFO] [stdout]     |
[INFO] [stdout] 201 | / pub struct EventListener {
[INFO] [stdout] 202 | |     /// A reference to [`Event`]'s inner state.
[INFO] [stdout] 203 | |     inner: Arc<Inner>,
[INFO] [stdout] 204 | |
[INFO] [stdout] 205 | |     /// A pointer to this listener's entry in the linked list.
[INFO] [stdout] 206 | |     entry: Option<NonNull<Entry>>,
[INFO] [stdout] 207 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.95s
[INFO] running `Command { std: "docker" "inspect" "5d0006d0d1d664aca218c53a892e7a517be54b076e0f418672e16a6abacd639c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0006d0d1d664aca218c53a892e7a517be54b076e0f418672e16a6abacd639c", kill_on_drop: false }`
[INFO] [stdout] 5d0006d0d1d664aca218c53a892e7a517be54b076e0f418672e16a6abacd639c
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5035cb8b2777e8171df679b9f3dd4071bfd0625aa927e54287e065d379ee5fbb
[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" "5035cb8b2777e8171df679b9f3dd4071bfd0625aa927e54287e065d379ee5fbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/event.rs:66:1
[INFO] [stdout]    |
[INFO] [stdout] 66 | / pub struct Event {
[INFO] [stdout] 67 | |     /// A pointer to heap-allocated inner state.
[INFO] [stdout] 68 | |     ///
[INFO] [stdout] 69 | |     /// This pointer is initially null and gets lazily initialized on first use. Semantically, it
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |     inner: AtomicPtr<Inner>,
[INFO] [stdout] 73 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/event.rs:201:1
[INFO] [stdout]     |
[INFO] [stdout] 201 | / pub struct EventListener {
[INFO] [stdout] 202 | |     /// A reference to [`Event`]'s inner state.
[INFO] [stdout] 203 | |     inner: Arc<Inner>,
[INFO] [stdout] 204 | |
[INFO] [stdout] 205 | |     /// A pointer to this listener's entry in the linked list.
[INFO] [stdout] 206 | |     entry: Option<NonNull<Entry>>,
[INFO] [stdout] 207 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling piper v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `smol`
[INFO] [stdout]  --> examples/foo.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     smol::run(async {
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `smol`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `piper`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/event.rs:66:1
[INFO] [stdout]    |
[INFO] [stdout] 66 | / pub struct Event {
[INFO] [stdout] 67 | |     /// A pointer to heap-allocated inner state.
[INFO] [stdout] 68 | |     ///
[INFO] [stdout] 69 | |     /// This pointer is initially null and gets lazily initialized on first use. Semantically, it
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |     inner: AtomicPtr<Inner>,
[INFO] [stdout] 73 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/event.rs:201:1
[INFO] [stdout]     |
[INFO] [stdout] 201 | / pub struct EventListener {
[INFO] [stdout] 202 | |     /// A reference to [`Event`]'s inner state.
[INFO] [stdout] 203 | |     inner: Arc<Inner>,
[INFO] [stdout] 204 | |
[INFO] [stdout] 205 | |     /// A pointer to this listener's entry in the linked list.
[INFO] [stdout] 206 | |     entry: Option<NonNull<Entry>>,
[INFO] [stdout] 207 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5035cb8b2777e8171df679b9f3dd4071bfd0625aa927e54287e065d379ee5fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5035cb8b2777e8171df679b9f3dd4071bfd0625aa927e54287e065d379ee5fbb", kill_on_drop: false }`
[INFO] [stdout] 5035cb8b2777e8171df679b9f3dd4071bfd0625aa927e54287e065d379ee5fbb
