[INFO] cloning repository https://github.com/lqd/slonik-proto
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lqd/slonik-proto" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flqd%2Fslonik-proto", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flqd%2Fslonik-proto'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f88a75a7d413b950a73ba70912d1cb2c5a93fe88
[INFO] checking lqd/slonik-proto against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flqd%2Fslonik-proto" "/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/lqd/slonik-proto on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lqd/slonik-proto
[INFO] finished tweaking git repo https://github.com/lqd/slonik-proto
[INFO] tweaked toml for git repo https://github.com/lqd/slonik-proto written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/lqd/slonik-proto already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded inventory v0.1.5
[INFO] [stderr]   Downloaded futures-task v0.3.3
[INFO] [stderr]   Downloaded inventory-impl v0.1.5
[INFO] [stderr]   Downloaded pyo3cls v0.9.0-alpha.1
[INFO] [stderr]   Downloaded futures-core v0.3.3
[INFO] [stderr]   Downloaded futures-io v0.3.3
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.9.0-alpha.1
[INFO] [stderr]   Downloaded futures-executor v0.3.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.0
[INFO] [stderr]   Downloaded futures v0.3.3
[INFO] [stderr]   Downloaded unindent v0.1.5
[INFO] [stderr]   Downloaded futures-channel v0.3.3
[INFO] [stderr]   Downloaded futures-macro v0.3.3
[INFO] [stderr]   Downloaded futures-sink v0.3.3
[INFO] [stderr]   Downloaded futures-util v0.3.3
[INFO] [stderr]   Downloaded pyo3 v0.9.0-alpha.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02a1712b9782eb532ad270e70640c538e73f0b7ef124e948c5cb1e0c63af9743
[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" "02a1712b9782eb532ad270e70640c538e73f0b7ef124e948c5cb1e0c63af9743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02a1712b9782eb532ad270e70640c538e73f0b7ef124e948c5cb1e0c63af9743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a1712b9782eb532ad270e70640c538e73f0b7ef124e948c5cb1e0c63af9743", kill_on_drop: false }`
[INFO] [stdout] 02a1712b9782eb532ad270e70640c538e73f0b7ef124e948c5cb1e0c63af9743
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d301d7ed2d801afcf4a555ef6ad882b46e54717fe4574b9b203988261f49019
[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" "7d301d7ed2d801afcf4a555ef6ad882b46e54717fe4574b9b203988261f49019", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking futures-core v0.3.3
[INFO] [stderr]     Checking futures-sink v0.3.3
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]     Checking futures-task v0.3.3
[INFO] [stderr]     Checking futures-io v0.3.3
[INFO] [stderr]     Checking fallible-iterator v0.1.6
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.3/src/lib.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                          ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking block-buffer v0.7.3
[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/lock_api-0.3.3/src/lib.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lock_api` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7d301d7ed2d801afcf4a555ef6ad882b46e54717fe4574b9b203988261f49019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d301d7ed2d801afcf4a555ef6ad882b46e54717fe4574b9b203988261f49019", kill_on_drop: false }`
[INFO] [stdout] 7d301d7ed2d801afcf4a555ef6ad882b46e54717fe4574b9b203988261f49019
