[INFO] fetching crate cueball-dns-resolver 0.3.2...
[INFO] checking cueball-dns-resolver-0.3.2 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate cueball-dns-resolver 0.3.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cueball-dns-resolver 0.3.2 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cueball-dns-resolver 0.3.2
[INFO] finished tweaking crates.io crate cueball-dns-resolver 0.3.2
[INFO] tweaked toml for crates.io crate cueball-dns-resolver 0.3.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 317186dc175b3701c61de64496088030e18f032dfa09e07c92d25c1de9ced69a
[INFO] running `Command { std: "docker" "start" "-a" "317186dc175b3701c61de64496088030e18f032dfa09e07c92d25c1de9ced69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "317186dc175b3701c61de64496088030e18f032dfa09e07c92d25c1de9ced69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317186dc175b3701c61de64496088030e18f032dfa09e07c92d25c1de9ced69a", kill_on_drop: false }`
[INFO] [stdout] 317186dc175b3701c61de64496088030e18f032dfa09e07c92d25c1de9ced69a
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 2dee694d6237855847a2c23a3d4795fce41796569cb3de32dd5025096a17b27a
[INFO] running `Command { std: "docker" "start" "-a" "2dee694d6237855847a2c23a3d4795fce41796569cb3de32dd5025096a17b27a", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking nibble_vec v0.0.4
[INFO] [stderr]     Checking rent_to_own v0.1.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking resolv-conf v0.6.3
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]     Checking radix_trie v0.1.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking idna v0.2.1
[INFO] [stdout] error[E0432]: unresolved import `unicode_normalization::is_nfc`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/idna-0.2.1/src/uts46.rs:18:29
[INFO] [stdout]    |
[INFO] [stdout] 18 | use unicode_normalization::{is_nfc, UnicodeNormalization};
[INFO] [stdout]    |                             ^^^^^^ no `is_nfc` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `idna`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2dee694d6237855847a2c23a3d4795fce41796569cb3de32dd5025096a17b27a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dee694d6237855847a2c23a3d4795fce41796569cb3de32dd5025096a17b27a", kill_on_drop: false }`
[INFO] [stdout] 2dee694d6237855847a2c23a3d4795fce41796569cb3de32dd5025096a17b27a