[INFO] fetching crate twirl 0.1.1...
[INFO] testing twirl-0.1.1 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate twirl 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate twirl 0.1.1
[INFO] finished tweaking crates.io crate twirl 0.1.1
[INFO] tweaked toml for crates.io crate twirl 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate twirl 0.1.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 237 packages to highest compatible versions
[INFO] [stderr]       Adding connect v0.1.2 (available: v0.2.4)
[INFO] [stderr]       Adding ffi-support v0.3.5 (available: v0.4.4)
[INFO] [stderr]       Adding h2 v0.2.0-alpha.3 (available: v0.2.7)
[INFO] [stderr]       Adding http v0.1.21 (available: v1.5.0)
[INFO] [stderr]       Adding http-body v0.2.0-alpha.3 (available: v0.2.0)
[INFO] [stderr]       Adding hyper v0.13.0-alpha.4 (available: v0.13.10)
[INFO] [stderr]       Adding hyper-tls v0.4.0-alpha.4 (available: v0.4.3)
[INFO] [stderr]       Adding simple-error v0.2.3 (available: v0.3.3)
[INFO] [stderr]       Adding tokio v0.2.0-alpha.6 (available: v0.2.25)
[INFO] [stderr]       Adding tokio-macros v0.2.0-alpha.6 (available: v0.2.6)
[INFO] [stderr]       Adding tokio-tls v0.3.0-alpha.6 (available: v0.3.1)
[INFO] [stderr]       Adding tower-make v0.3.0-alpha.2a (available: v0.3.0)
[INFO] [stderr]       Adding tower-service v0.3.0-alpha.2 (available: v0.3.3)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f
[INFO] running `Command { std: "docker" "start" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]    Compiling hyper v0.13.0-alpha.4
[INFO] [stderr]    Compiling async-std v1.13.2
[INFO] [stderr]    Compiling icu_provider v2.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.0-alpha.6
[INFO] [stderr]    Compiling icu_properties v2.3.0
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[INFO] [stderr]    Compiling async-tls v0.9.0
[INFO] [stderr]    Compiling hyper-tls v0.4.0-alpha.4
[INFO] [stdout] error[E0658]: custom inner attributes are unstable
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/connect-0.1.2/src/schema/message.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![rustfmt::skip]
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling idna_adapter v1.2.2
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `connect` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f", kill_on_drop: false }`
[INFO] [stdout] 68c1c1d78f84048cd02a20ab324dfcd60b3bea94e708100faf246aacd55e010f
