[INFO] fetching crate sim2h_server 0.0.51-alpha1...
[INFO] checking sim2h_server-0.0.51-alpha1 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate sim2h_server 0.0.51-alpha1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate sim2h_server 0.0.51-alpha1 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sim2h_server 0.0.51-alpha1
[INFO] finished tweaking crates.io crate sim2h_server 0.0.51-alpha1
[INFO] tweaked toml for crates.io crate sim2h_server 0.0.51-alpha1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate sim2h_server 0.0.51-alpha1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abcf0108ac2d5da94a2867ef33aa7f356c9376d546821856d8d7396e203a3a04
[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" "abcf0108ac2d5da94a2867ef33aa7f356c9376d546821856d8d7396e203a3a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abcf0108ac2d5da94a2867ef33aa7f356c9376d546821856d8d7396e203a3a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abcf0108ac2d5da94a2867ef33aa7f356c9376d546821856d8d7396e203a3a04", kill_on_drop: false }`
[INFO] [stdout] abcf0108ac2d5da94a2867ef33aa7f356c9376d546821856d8d7396e203a3a04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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] 193c14353b3dba24cec0ca799e54a2885ff1a305446803e60d35fac824c1ca8c
[INFO] running `Command { std: "docker" "start" "-a" "193c14353b3dba24cec0ca799e54a2885ff1a305446803e60d35fac824c1ca8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking either v1.5.3
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[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling protobuf v2.14.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling prometheus v0.7.0
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]    Compiling itoa v0.4.6
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[INFO] [stderr]     Checking tokio-process v0.2.5
[INFO] [stderr]    Compiling holochain_core_types v0.0.51-alpha1
[INFO] [stderr]    Compiling rust_sodium_holochain_fork-sys v0.10.4
[INFO] [stderr]    Compiling holochain_json_derive v0.0.23
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[INFO] [stderr]     Checking lib3h_zombie_actor v0.0.42
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/holochain_json_api-0.0.23/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/holochain_json_api-0.0.23/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `holochain_json_api`.
[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" "193c14353b3dba24cec0ca799e54a2885ff1a305446803e60d35fac824c1ca8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193c14353b3dba24cec0ca799e54a2885ff1a305446803e60d35fac824c1ca8c", kill_on_drop: false }`
[INFO] [stdout] 193c14353b3dba24cec0ca799e54a2885ff1a305446803e60d35fac824c1ca8c
