[INFO] fetching crate keebrs 0.3.0...
[INFO] checking keebrs-0.3.0 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate keebrs 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate keebrs 0.3.0 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate keebrs 0.3.0
[INFO] finished tweaking crates.io crate keebrs 0.3.0
[INFO] tweaked toml for crates.io crate keebrs 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded postcard v0.5.2
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded heapless v0.5.6
[INFO] [stderr]   Downloaded async-codec v0.4.1
[INFO] [stderr]   Downloaded newtype v0.2.1
[INFO] [stderr]   Downloaded derive-newtype v0.2.3
[INFO] [stderr]   Downloaded polymer-core v0.1.0
[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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21476c6f17f9e26baaab37a7c0c8f318e7f399542a687c1a4af02c1e11054994
[INFO] running `Command { std: "docker" "start" "-a" "21476c6f17f9e26baaab37a7c0c8f318e7f399542a687c1a4af02c1e11054994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21476c6f17f9e26baaab37a7c0c8f318e7f399542a687c1a4af02c1e11054994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21476c6f17f9e26baaab37a7c0c8f318e7f399542a687c1a4af02c1e11054994", kill_on_drop: false }`
[INFO] [stdout] 21476c6f17f9e26baaab37a7c0c8f318e7f399542a687c1a4af02c1e11054994
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78f90f19b0d489dbf3e4222be439a6bf4fa20198fb999f15fb9c748f8605fd60
[INFO] running `Command { std: "docker" "start" "-a" "78f90f19b0d489dbf3e4222be439a6bf4fa20198fb999f15fb9c748f8605fd60", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking rgb v0.8.37
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking polymer-core v0.1.0
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/polymer-core-0.1.0/src/lib.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(arbitrary_self_types, const_fn, never_type)]
[INFO] [stdout]   |                                  ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polymer-core` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "78f90f19b0d489dbf3e4222be439a6bf4fa20198fb999f15fb9c748f8605fd60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f90f19b0d489dbf3e4222be439a6bf4fa20198fb999f15fb9c748f8605fd60", kill_on_drop: false }`
[INFO] [stdout] 78f90f19b0d489dbf3e4222be439a6bf4fa20198fb999f15fb9c748f8605fd60
