[INFO] fetching crate nimiq-rpc-server 0.2.0...
[INFO] testing nimiq-rpc-server-0.2.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate nimiq-rpc-server 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate nimiq-rpc-server 0.2.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nimiq-rpc-server 0.2.0
[INFO] finished tweaking crates.io crate nimiq-rpc-server 0.2.0
[INFO] tweaked toml for crates.io crate nimiq-rpc-server 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0311de52454765d26f837a74758c116829b75dc2a275eada38d970439e8280be
[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" "0311de52454765d26f837a74758c116829b75dc2a275eada38d970439e8280be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0311de52454765d26f837a74758c116829b75dc2a275eada38d970439e8280be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0311de52454765d26f837a74758c116829b75dc2a275eada38d970439e8280be", kill_on_drop: false }`
[INFO] [stdout] 0311de52454765d26f837a74758c116829b75dc2a275eada38d970439e8280be
[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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--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] 33ffd7c5f6251bc717e815ff857e505c4606788fd3dab61e602a555a1bde5e10
[INFO] running `Command { std: "docker" "start" "-a" "33ffd7c5f6251bc717e815ff857e505c4606788fd3dab61e602a555a1bde5e10", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling nimiq-macros v0.2.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling signature v1.2.2
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling nimiq-collections v0.2.0
[INFO] [stderr]    Compiling atomic v0.4.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nimiq-collections-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_into_raw_non_null)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling supercow v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nimiq-collections-0.2.0/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling weak-table v0.2.4
[INFO] [stderr]    Compiling json v0.11.15
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stdout] error[E0599]: no function or associated item named `into_raw_non_null` found for struct `std::boxed::Box<_>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nimiq-collections-0.2.0/src/linked_list.rs:141:34
[INFO] [stdout]     |
[INFO] [stdout] 141 |             let node = Some(Box::into_raw_non_null(node));
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^ function or associated item not found in `std::boxed::Box<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `into_raw_non_null` found for struct `std::boxed::Box<_>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nimiq-collections-0.2.0/src/linked_list.rs:176:34
[INFO] [stdout]     |
[INFO] [stdout] 176 |             let node = Some(Box::into_raw_non_null(node));
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^ function or associated item not found in `std::boxed::Box<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `into_raw_non_null` found for struct `std::boxed::Box<_>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nimiq-collections-0.2.0/src/linked_list.rs:914:38
[INFO] [stdout]     |
[INFO] [stdout] 914 |                 let node = Some(Box::into_raw_non_null(Box::new(Node {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^ function or associated item not found in `std::boxed::Box<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nimiq-collections`.
[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" "33ffd7c5f6251bc717e815ff857e505c4606788fd3dab61e602a555a1bde5e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33ffd7c5f6251bc717e815ff857e505c4606788fd3dab61e602a555a1bde5e10", kill_on_drop: false }`
[INFO] [stdout] 33ffd7c5f6251bc717e815ff857e505c4606788fd3dab61e602a555a1bde5e10
