[INFO] fetching crate quick-xml 0.23.0-alpha3...
[INFO] checking quick-xml-0.23.0-alpha3 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate quick-xml 0.23.0-alpha3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate quick-xml 0.23.0-alpha3 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quick-xml 0.23.0-alpha3
[INFO] finished tweaking crates.io crate quick-xml 0.23.0-alpha3
[INFO] tweaked toml for crates.io crate quick-xml 0.23.0-alpha3 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate quick-xml 0.23.0-alpha3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v1.1.2
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded ordered-float v2.0.1
[INFO] [stderr]   Downloaded serde-value v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", 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] a5e3ee914308705c0d739c9280f15a9e31e78e837bfaee899ca06bcf2c1145f5
[INFO] running `Command { std: "docker" "start" "-a" "a5e3ee914308705c0d739c9280f15a9e31e78e837bfaee899ca06bcf2c1145f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5e3ee914308705c0d739c9280f15a9e31e78e837bfaee899ca06bcf2c1145f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e3ee914308705c0d739c9280f15a9e31e78e837bfaee899ca06bcf2c1145f5", kill_on_drop: false }`
[INFO] [stdout] a5e3ee914308705c0d739c9280f15a9e31e78e837bfaee899ca06bcf2c1145f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--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] 7c7091549b82853f07820923c91ba2d35e8199e99579d4428bf14d88647ba42f
[INFO] running `Command { std: "docker" "start" "-a" "7c7091549b82853f07820923c91ba2d35e8199e99579d4428bf14d88647ba42f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking quick-xml v0.23.0-alpha3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking ordered-float v2.0.1
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]  --> examples/nested_readers.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     index: u8,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 37.04s
[INFO] running `Command { std: "docker" "inspect" "7c7091549b82853f07820923c91ba2d35e8199e99579d4428bf14d88647ba42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c7091549b82853f07820923c91ba2d35e8199e99579d4428bf14d88647ba42f", kill_on_drop: false }`
[INFO] [stdout] 7c7091549b82853f07820923c91ba2d35e8199e99579d4428bf14d88647ba42f