[INFO] fetching crate keytokey 0.5.0...
[INFO] testing keytokey-0.5.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate keytokey 0.5.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate keytokey 0.5.0
[INFO] finished tweaking crates.io crate keytokey 0.5.0
[INFO] tweaked toml for crates.io crate keytokey 0.5.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate keytokey 0.5.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.2)
[INFO] [stderr]       Adding num_enum v0.3.1 (available: v0.7.6)
[INFO] [stderr]       Adding spin v0.5.2 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-polyfill v1.0.3
[INFO] [stderr]   Downloaded num_enum v0.3.1
[INFO] [stderr]   Downloaded smallbitvec v2.6.0
[INFO] [stderr]   Downloaded heapless v0.7.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5d83295a370f88bf21827dbc05908c29eaa917b2f33bf0c108f6c85a9c33277
[INFO] running `Command { std: "docker" "start" "-a" "e5d83295a370f88bf21827dbc05908c29eaa917b2f33bf0c108f6c85a9c33277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5d83295a370f88bf21827dbc05908c29eaa917b2f33bf0c108f6c85a9c33277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d83295a370f88bf21827dbc05908c29eaa917b2f33bf0c108f6c85a9c33277", kill_on_drop: false }`
[INFO] [stdout] e5d83295a370f88bf21827dbc05908c29eaa917b2f33bf0c108f6c85a9c33277
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb7b7ac886a549158907e3c8d209502a135da92c8f8b7285bf77f018d0354a69
[INFO] running `Command { std: "docker" "start" "-a" "eb7b7ac886a549158907e3c8d209502a135da92c8f8b7285bf77f018d0354a69", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling smallbitvec v2.6.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling no-std-compat v0.4.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling num_enum v0.3.1
[INFO] [stderr]    Compiling keytokey v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:190:46
[INFO] [stdout]     |
[INFO] [stdout] 190 |             .drain_filter(|(_event, status)| (EventStatus::Unhandled == *status));
[INFO] [stdout]     |                                              ^                                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 190 -             .drain_filter(|(_event, status)| (EventStatus::Unhandled == *status));
[INFO] [stdout] 190 +             .drain_filter(|(_event, status)| EventStatus::Unhandled == *status);
[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] help: there is a feature with a similar name: `option_filter`
[INFO] [stdout]   |
[INFO] [stdout] 2 - #![feature(drain_filter)]
[INFO] [stdout] 2 + #![feature(option_filter)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `alloc::vec::Vec<(Event, EventStatus)>` in the current scope
[INFO] [stdout]    --> src/lib.rs:171:21
[INFO] [stdout]     |
[INFO] [stdout] 171 |         self.events.drain_filter(|(event, status)| {
[INFO] [stdout]     |         ------------^^^^^^^^^^^^ method not found in `alloc::vec::Vec<(Event, EventStatus)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `alloc::vec::Vec<(Event, EventStatus)>` in the current scope
[INFO] [stdout]    --> src/lib.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 189 | /         self.events
[INFO] [stdout] 190 | |             .drain_filter(|(_event, status)| (EventStatus::Unhandled == *status));
[INFO] [stdout]     | |             -^^^^^^^^^^^^ method not found in `alloc::vec::Vec<(Event, EventStatus)>`
[INFO] [stdout]     | |_____________|
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keytokey` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eb7b7ac886a549158907e3c8d209502a135da92c8f8b7285bf77f018d0354a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb7b7ac886a549158907e3c8d209502a135da92c8f8b7285bf77f018d0354a69", kill_on_drop: false }`
[INFO] [stdout] eb7b7ac886a549158907e3c8d209502a135da92c8f8b7285bf77f018d0354a69