[INFO] cloning repository https://github.com/CharlyCst/ibc-mock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CharlyCst/ibc-mock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlyCst%2Fibc-mock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlyCst%2Fibc-mock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9709e4b8e5f80d43f84aff66ebfdf445c25203ed
[INFO] testing CharlyCst/ibc-mock against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlyCst%2Fibc-mock" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CharlyCst/ibc-mock 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 git repo https://github.com/CharlyCst/ibc-mock
[INFO] finished tweaking git repo https://github.com/CharlyCst/ibc-mock
[INFO] tweaked toml for git repo https://github.com/CharlyCst/ibc-mock written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/CharlyCst/ibc-mock already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 1dfffd2f0a5c7c5d1f9536c1afb25f1f4f642708ec06d3237b645de5e9ede21a
[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" "1dfffd2f0a5c7c5d1f9536c1afb25f1f4f642708ec06d3237b645de5e9ede21a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dfffd2f0a5c7c5d1f9536c1afb25f1f4f642708ec06d3237b645de5e9ede21a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dfffd2f0a5c7c5d1f9536c1afb25f1f4f642708ec06d3237b645de5e9ede21a", kill_on_drop: false }`
[INFO] [stdout] 1dfffd2f0a5c7c5d1f9536c1afb25f1f4f642708ec06d3237b645de5e9ede21a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 3c5e370a8e8f8b340b0383d80ce6726349c515e177f657a22011612500699e14
[INFO] running `Command { std: "docker" "start" "-a" "3c5e370a8e8f8b340b0383d80ce6726349c515e177f657a22011612500699e14", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling hashbrown v0.9.0
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling signature v1.2.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling simple-error v0.2.2
[INFO] [stderr]    Compiling os_str_bytes v2.3.2
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[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/blake2-rfc-0.2.18/src/lib.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "simd", feature(platform_intrinsics, repr_simd))]
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/blake2-rfc-0.2.18/src/lib.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![cfg_attr(feature = "simd_opt", feature(cfg_target_feature))]
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/blake2-rfc-0.2.18/src/lib.rs:21:35
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![cfg_attr(feature = "simd_asm", feature(asm))]
[INFO] [stdout]    |                                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stdout] error: aborting due to 3 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 `blake2-rfc`.
[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" "3c5e370a8e8f8b340b0383d80ce6726349c515e177f657a22011612500699e14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c5e370a8e8f8b340b0383d80ce6726349c515e177f657a22011612500699e14", kill_on_drop: false }`
[INFO] [stdout] 3c5e370a8e8f8b340b0383d80ce6726349c515e177f657a22011612500699e14
