[INFO] cloning repository https://github.com/SchoolOfFreelancing/PolkaDot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SchoolOfFreelancing/PolkaDot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchoolOfFreelancing%2FPolkaDot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchoolOfFreelancing%2FPolkaDot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eba3eeae646809f0a51fd592e0bc25320bab6dae
[INFO] checking SchoolOfFreelancing/PolkaDot against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchoolOfFreelancing%2FPolkaDot" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SchoolOfFreelancing/PolkaDot on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SchoolOfFreelancing/PolkaDot
[INFO] finished tweaking git repo https://github.com/SchoolOfFreelancing/PolkaDot
[INFO] tweaked toml for git repo https://github.com/SchoolOfFreelancing/PolkaDot written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SchoolOfFreelancing/PolkaDot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caa0810e5543e333be4802b7970f8eedfef1676055072872e67880cb7ca5983e
[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" "caa0810e5543e333be4802b7970f8eedfef1676055072872e67880cb7ca5983e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caa0810e5543e333be4802b7970f8eedfef1676055072872e67880cb7ca5983e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa0810e5543e333be4802b7970f8eedfef1676055072872e67880cb7ca5983e", kill_on_drop: false }`
[INFO] [stdout] caa0810e5543e333be4802b7970f8eedfef1676055072872e67880cb7ca5983e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cecce3c8722e2309c2f6ce5cbefeaf16d32c639e19afe3b53120eda51ff3dfff
[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" "cecce3c8722e2309c2f6ce5cbefeaf16d32c639e19afe3b53120eda51ff3dfff", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.43
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.2
[INFO] [stderr]     Checking bitvec v0.14.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking hash-db v0.15.0
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking hashmap_core v0.1.10
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking environmental v1.0.1
[INFO] [stderr]    Compiling protobuf v2.8.0
[INFO] [stderr]     Checking bs58 v0.2.2
[INFO] [stderr]     Checking data-encoding v2.1.2
[INFO] [stderr]     Checking integer-sqrt v0.1.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking quick-error v0.1.4
[INFO] [stderr]     Checking nohash-hasher v0.1.1
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]     Checking parity-send-wrapper v0.1.0
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f64)
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]    Compiling regex-syntax v0.6.11
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling substrate-wasm-builder-runner v1.0.2
[INFO] [stderr]    Compiling bindgen v0.47.3
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]     Checking interleaved-ordered v0.1.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b4015)
[INFO] [stderr]    Compiling sysinfo v0.9.1
[INFO] [stderr]     Checking target_info v0.1.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling reed-solomon-erasure v4.0.0 (https://github.com/paritytech/reed-solomon-erasure#63c609be)
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking lock_api v0.2.0
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking trie-root v0.15.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking linked_hash_set v0.1.3
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking pretty_assertions v0.5.1
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]    Compiling polkadot-runtime v0.1.0 (/opt/rustwide/workdir/runtime)
[INFO] [stderr]    Compiling adder v0.1.0 (/opt/rustwide/workdir/test-parachains/adder)
[INFO] [stderr]    Compiling halt v0.1.0 (/opt/rustwide/workdir/test-parachains/halt)
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking memrange v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking getrandom v0.1.8
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking fs-swap v0.2.4
[INFO] [stderr]     Checking rpassword v3.0.2
[INFO] [stderr]     Checking fdlimit v0.1.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr] error: failed to run custom build command for `adder v0.1.0 (/opt/rustwide/workdir/test-parachains/adder)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/adder-99132492f397e098/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]       Updating crates.io index
[INFO] [stderr]   warning: spurious network error (2 tries remaining): failed to resolve address for github.com: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr]   warning: spurious network error (1 tries remaining): failed to resolve address for github.com: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr]   error: failed to get `substrate-wasm-builder` as a dependency of package `wasm-build-runner-impl v1.0.0 (/opt/rustwide/target/debug/build/adder-7dba77fc550104d2/out/wasm_build_runner)`
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     failed to load source for dependency `substrate-wasm-builder`
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     Unable to update registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     failed to fetch `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     network failure seems to have happened
[INFO] [stderr]     if a proxy or similar is necessary `net.git-fetch-with-cli` may help here
[INFO] [stderr]     https://doc.rust-lang.org/cargo/reference/config.html#netgit-fetch-with-cli
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     failed to resolve address for github.com: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cecce3c8722e2309c2f6ce5cbefeaf16d32c639e19afe3b53120eda51ff3dfff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecce3c8722e2309c2f6ce5cbefeaf16d32c639e19afe3b53120eda51ff3dfff", kill_on_drop: false }`
[INFO] [stdout] cecce3c8722e2309c2f6ce5cbefeaf16d32c639e19afe3b53120eda51ff3dfff