[INFO] fetching crate weft 0.1.0...
[INFO] testing weft-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate weft 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate weft 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate weft 0.1.0
[INFO] finished tweaking crates.io crate weft 0.1.0
[INFO] tweaked toml for crates.io crate weft 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded markup5ever v0.7.5
[INFO] [stderr]   Downloaded html5ever v0.22.5
[INFO] [stderr]   Downloaded weft_derive v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 861e9a49bd22e3a090f5958c3bfa45453c71b163a45c870822ec9d092e00eb54
[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" "861e9a49bd22e3a090f5958c3bfa45453c71b163a45c870822ec9d092e00eb54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "861e9a49bd22e3a090f5958c3bfa45453c71b163a45c870822ec9d092e00eb54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "861e9a49bd22e3a090f5958c3bfa45453c71b163a45c870822ec9d092e00eb54", kill_on_drop: false }`
[INFO] [stdout] 861e9a49bd22e3a090f5958c3bfa45453c71b163a45c870822ec9d092e00eb54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", 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] c9efd9dd0d01133d70dede95dc0d0c576bb35b4767a4bd398ba3a1cf57b3d683
[INFO] running `Command { std: "docker" "start" "-a" "c9efd9dd0d01133d70dede95dc0d0c576bb35b4767a4bd398ba3a1cf57b3d683", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling dtoa-short v0.3.3
[INFO] [stderr]    Compiling cssparser v0.25.9
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling kuchiki v0.7.3
[INFO] [stderr]    Compiling weft_derive v0.1.1
[INFO] [stderr]    Compiling weft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/template.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.77s
[INFO] running `Command { std: "docker" "inspect" "c9efd9dd0d01133d70dede95dc0d0c576bb35b4767a4bd398ba3a1cf57b3d683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9efd9dd0d01133d70dede95dc0d0c576bb35b4767a4bd398ba3a1cf57b3d683", kill_on_drop: false }`
[INFO] [stdout] c9efd9dd0d01133d70dede95dc0d0c576bb35b4767a4bd398ba3a1cf57b3d683
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 995886527f567809d7edd5e7f9645cff54744980d257741e0bb0577bd95509f9
[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" "995886527f567809d7edd5e7f9645cff54744980d257741e0bb0577bd95509f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling weft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/template.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/template.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]  --> tests/canary.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(WeftRenderable)]
[INFO] [stdout]   |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]   --> tests/canary.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[derive(WeftRenderable)]
[INFO] [stdout]    |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]   --> tests/canary.rs:57:10
[INFO] [stdout]    |
[INFO] [stdout] 57 | #[derive(WeftRenderable)]
[INFO] [stdout]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]   --> tests/canary.rs:75:10
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[derive(WeftRenderable)]
[INFO] [stdout]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]   --> tests/canary.rs:96:10
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[derive(WeftRenderable)]
[INFO] [stdout]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | #[derive(WeftRenderable)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:156:10
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[derive(WeftRenderable)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:179:10
[INFO] [stdout]     |
[INFO] [stdout] 179 | #[derive(WeftRenderable)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:207:14
[INFO] [stdout]     |
[INFO] [stdout] 207 |     #[derive(WeftRenderable)]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:225:14
[INFO] [stdout]     |
[INFO] [stdout] 225 |     #[derive(WeftRenderable)]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:243:14
[INFO] [stdout]     |
[INFO] [stdout] 243 |     #[derive(WeftRenderable)]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `weft`
[INFO] [stdout]    --> tests/canary.rs:261:14
[INFO] [stdout]     |
[INFO] [stdout] 261 |     #[derive(WeftRenderable)]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `weft`
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "995886527f567809d7edd5e7f9645cff54744980d257741e0bb0577bd95509f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995886527f567809d7edd5e7f9645cff54744980d257741e0bb0577bd95509f9", kill_on_drop: false }`
[INFO] [stdout] 995886527f567809d7edd5e7f9645cff54744980d257741e0bb0577bd95509f9