[INFO] cloning repository https://github.com/artifice-network/networking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artifice-network/networking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartifice-network%2Fnetworking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartifice-network%2Fnetworking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00b3445d0eabe80f01346000d553f3a95ce71445
[INFO] checking artifice-network/networking against master#119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 for pr-75180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartifice-network%2Fnetworking" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artifice-network/networking on toolchain 119d2a1a98fe87d4ae6cabf12134a0ef2fb95851
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/artifice-network/networking
[INFO] finished tweaking git repo https://github.com/artifice-network/networking
[INFO] tweaked toml for git repo https://github.com/artifice-network/networking written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/artifice-network/networking already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2368bf636a01ecb305a6bdeb45d5d1f0a43e342044fafc2a6f14cbd3aa1c6ee
[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" "d2368bf636a01ecb305a6bdeb45d5d1f0a43e342044fafc2a6f14cbd3aa1c6ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2368bf636a01ecb305a6bdeb45d5d1f0a43e342044fafc2a6f14cbd3aa1c6ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2368bf636a01ecb305a6bdeb45d5d1f0a43e342044fafc2a6f14cbd3aa1c6ee", kill_on_drop: false }`
[INFO] [stdout] d2368bf636a01ecb305a6bdeb45d5d1f0a43e342044fafc2a6f14cbd3aa1c6ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5783b04c9567627da3fb1a3848ad87ab7262bc2a413264aad0c64141f99b2364
[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" "5783b04c9567627da3fb1a3848ad87ab7262bc2a413264aad0c64141f99b2364", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking pnet_base v0.26.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking base64 v0.12.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling num-bigint-dig v0.6.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]     Checking pnet_macros_support v0.26.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling generic-array v0.14.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking pnet_sys v0.26.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.11
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tar v0.4.29
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking pem v0.8.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.8.0
[INFO] [stderr]     Checking sha2 v0.9.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking simple_asn1 v0.4.0
[INFO] [stderr]     Checking ipnetwork v0.16.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde-hex v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking pnet_datalink v0.26.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]    Compiling num-derive v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]    Compiling pnet_macros v0.26.0
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking rsa v0.3.0
[INFO] [stderr]    Compiling pnet_packet v0.26.0
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking pnet_transport v0.26.0
[INFO] [stderr]     Checking pnet v0.26.0
[INFO] [stderr]     Checking networking v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `collapse` found for enum `unified::SyncAsync<std::string::String, std::string::String>` in the current scope
[INFO] [stdout]    --> src/unified.rs:261:26
[INFO] [stdout]     |
[INFO] [stdout] 28  | pub enum SyncAsync<A, S> {
[INFO] [stdout]     | ------------------------ method `collapse` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 261 |     let v: String = s_as.collapse();
[INFO] [stdout]     |                          ^^^^^^^^ method not found in `unified::SyncAsync<std::string::String, std::string::String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `networking`.
[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" "5783b04c9567627da3fb1a3848ad87ab7262bc2a413264aad0c64141f99b2364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5783b04c9567627da3fb1a3848ad87ab7262bc2a413264aad0c64141f99b2364", kill_on_drop: false }`
[INFO] [stdout] 5783b04c9567627da3fb1a3848ad87ab7262bc2a413264aad0c64141f99b2364