[INFO] fetching crate qecs 0.0.7...
[INFO] documenting qecs-0.0.7 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate qecs 0.0.7 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate qecs 0.0.7 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qecs 0.0.7
[INFO] finished tweaking crates.io crate qecs 0.0.7
[INFO] tweaked toml for crates.io crate qecs 0.0.7 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afc1bc565372cfc05ef5fcab27a8b914b4117048f42c02afcf280b452d2cc337
[INFO] running `Command { std: "docker" "start" "-a" "afc1bc565372cfc05ef5fcab27a8b914b4117048f42c02afcf280b452d2cc337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afc1bc565372cfc05ef5fcab27a8b914b4117048f42c02afcf280b452d2cc337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afc1bc565372cfc05ef5fcab27a8b914b4117048f42c02afcf280b452d2cc337", kill_on_drop: false }`
[INFO] [stdout] afc1bc565372cfc05ef5fcab27a8b914b4117048f42c02afcf280b452d2cc337
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5b1a7c24e73a2536f8013a90c6733c20b2762e37e3f58be3bcab5228ac8e878
[INFO] running `Command { std: "docker" "start" "-a" "e5b1a7c24e73a2536f8013a90c6733c20b2762e37e3f58be3bcab5228ac8e878", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking downcast v0.2.3
[INFO] [stderr]     Checking vec_map v0.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.2.3/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_type_id)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_type_id` found for reference `&T` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.2.3/src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     obj.get_type_id()
[INFO] [stdout]    |         ^^^^^^^^^^^ method not found in `&T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `downcast` due to 3 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e5b1a7c24e73a2536f8013a90c6733c20b2762e37e3f58be3bcab5228ac8e878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5b1a7c24e73a2536f8013a90c6733c20b2762e37e3f58be3bcab5228ac8e878", kill_on_drop: false }`
[INFO] [stdout] e5b1a7c24e73a2536f8013a90c6733c20b2762e37e3f58be3bcab5228ac8e878
