[INFO] fetching crate luk_chain 0.2.0...
[INFO] testing luk_chain-0.2.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate luk_chain 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate luk_chain 0.2.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luk_chain 0.2.0
[INFO] finished tweaking crates.io crate luk_chain 0.2.0
[INFO] tweaked toml for crates.io crate luk_chain 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate luk_chain 0.2.0 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crypto-bigint v0.2.2
[INFO] [stderr]   Downloaded tracing-test-macro v0.1.0
[INFO] [stderr]   Downloaded tokio-macros v1.3.0
[INFO] [stderr]   Downloaded spki v0.4.0
[INFO] [stderr]   Downloaded rsa v0.5.0
[INFO] [stderr]   Downloaded const-oid v0.6.0
[INFO] [stderr]   Downloaded tracing-test v0.1.0
[INFO] [stderr]   Downloaded zeroize_derive v1.1.0
[INFO] [stderr]   Downloaded base64ct v1.0.0
[INFO] [stderr]   Downloaded zeroize v1.4.1
[INFO] [stderr]   Downloaded pkcs8 v0.7.5
[INFO] [stderr]   Downloaded der v0.4.0
[INFO] [stderr]   Downloaded num-bigint-dig v0.7.0
[INFO] [stderr]   Downloaded tokio v1.9.0
[INFO] [stderr]   Downloaded pkcs1 v0.2.3
[INFO] [stderr]   Downloaded pem-rfc7468 v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f69acb78b220b4adf6991b0f5e9257d1491b8837a88d8af3709fad4be46025d8
[INFO] running `Command { std: "docker" "start" "-a" "f69acb78b220b4adf6991b0f5e9257d1491b8837a88d8af3709fad4be46025d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f69acb78b220b4adf6991b0f5e9257d1491b8837a88d8af3709fad4be46025d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f69acb78b220b4adf6991b0f5e9257d1491b8837a88d8af3709fad4be46025d8", kill_on_drop: false }`
[INFO] [stdout] f69acb78b220b4adf6991b0f5e9257d1491b8837a88d8af3709fad4be46025d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3af8297f1523e619635ed2a5e3b2334b57ae20da0c2a0b078f911d3c11f2ca3
[INFO] running `Command { std: "docker" "start" "-a" "c3af8297f1523e619635ed2a5e3b2334b57ae20da0c2a0b078f911d3c11f2ca3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
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[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
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[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling pkcs1 v0.2.3
[INFO] [stderr]    Compiling pkcs8 v0.7.5
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling tracing-subscriber v0.2.19
[INFO] [stderr]    Compiling rsa v0.5.0
[INFO] [stderr]    Compiling luk_chain v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Block`, `Data`, `Event`
[INFO] [stdout]  --> src/userpair.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Block, BlockChain, BlockChainBase, Data, Event,
[INFO] [stdout]   |     ^^^^^                              ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `tokio::sync::RwLockWriteGuard<'_, Vec<events::Event<T>>>` in the current scope
[INFO] [stdout]    --> src/network/participants/shared.rs:584:10
[INFO] [stdout]     |
[INFO] [stdout] 583 |       let dropped = unlocked_loose
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 584 | |         .drain_filter(|x| block.events.contains(x))
[INFO] [stdout]     | |         -^^^^^^^^^^^^ method not found in `RwLockWriteGuard<'_, Vec<Event<T>>>`
[INFO] [stdout]     | |_________|
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `luk_chain` (lib) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c3af8297f1523e619635ed2a5e3b2334b57ae20da0c2a0b078f911d3c11f2ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3af8297f1523e619635ed2a5e3b2334b57ae20da0c2a0b078f911d3c11f2ca3", kill_on_drop: false }`
[INFO] [stdout] c3af8297f1523e619635ed2a5e3b2334b57ae20da0c2a0b078f911d3c11f2ca3
