[INFO] crate webthing 0.12.1 is already in cache
[INFO] checking webthing-0.12.1 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate webthing 0.12.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate webthing 0.12.1 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate webthing 0.12.1
[INFO] finished tweaking crates.io crate webthing 0.12.1
[INFO] tweaked toml for crates.io crate webthing 0.12.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate webthing 0.12.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 61496298da82768ab7bef94e7692846eaf33beafa104152576f2b4c2888acf6a
[INFO] running `"docker" "start" "-a" "61496298da82768ab7bef94e7692846eaf33beafa104152576f2b4c2888acf6a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling actix-web v0.7.19
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking signal-hook-registry v1.1.1
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking jsonway v2.0.0
[INFO] [stderr]     Checking nix v0.10.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling synstructure v0.12.2
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking signal-hook v0.1.11
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie v0.11.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking v_htmlescape v0.4.5
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling valico v3.1.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking libmdns v0.2.3
[INFO] [stderr] error[E0284]: type annotations needed: cannot resolve `<std::string::String as std::ops::Add<&_>>::Output == std::string::String`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/valico-3.1.0/src/json_schema/helpers.rs:108:42
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     Some("/".to_string() + fragment_parts[1..].join("/").as_ref())
[INFO] [stderr]     |                                          ^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0284`.
[INFO] [stderr] error: could not compile `valico`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "61496298da82768ab7bef94e7692846eaf33beafa104152576f2b4c2888acf6a"`
[INFO] running `"docker" "rm" "-f" "61496298da82768ab7bef94e7692846eaf33beafa104152576f2b4c2888acf6a"`
[INFO] [stdout] 61496298da82768ab7bef94e7692846eaf33beafa104152576f2b4c2888acf6a