[INFO] cloning repository https://github.com/redox-os/drivers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/redox-os/drivers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fdrivers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fdrivers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4da3ceb72331d354ede1d3af3751157f3860d2f0
[INFO] checking redox-os/drivers against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fdrivers" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/redox-os/drivers 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/redox-os/drivers
[INFO] finished tweaking git repo https://github.com/redox-os/drivers
[INFO] tweaked toml for git repo https://github.com/redox-os/drivers written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/redox-os/drivers 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f1d963e787c6070ccae2309cd9bf20852958ee37f8c5efeabf08db30ce686c23
[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" "f1d963e787c6070ccae2309cd9bf20852958ee37f8c5efeabf08db30ce686c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1d963e787c6070ccae2309cd9bf20852958ee37f8c5efeabf08db30ce686c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1d963e787c6070ccae2309cd9bf20852958ee37f8c5efeabf08db30ce686c23", kill_on_drop: false }`
[INFO] [stdout] f1d963e787c6070ccae2309cd9bf20852958ee37f8c5efeabf08db30ce686c23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 2e3dcf38f9730ee002c237e9fe970e681137e1cf03c0ef89f93681b32403974f
[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" "2e3dcf38f9730ee002c237e9fe970e681137e1cf03c0ef89f93681b32403974f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking paw-raw v1.0.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]     Checking arg_parser v0.1.0 (https://gitlab.redox-os.org/redox-os/arg-parser.git#1c434b55)
[INFO] [stderr]     Checking extra v0.1.0 (https://gitlab.redox-os.org/redox-os/libextra.git#cf213969)
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]     Checking block-io-wrapper v0.1.0 (/opt/rustwide/workdir/block-io-wrapper)
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking spin v0.9.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37 (https://gitlab.redox-os.org/redox-os/net2-rs.git?branch=master#db0604dc)
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]     Checking redox_syscall v0.2.9
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking vte v0.3.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking mio v0.6.14 (https://gitlab.redox-os.org/redox-os/mio.git?branch=redox-unix#c9a70849)
[INFO] [stderr]     Checking rand v0.6.5
[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/redox_syscall-0.2.9/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[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/redox_syscall-0.2.9/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(llvm_asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tar v0.4.35
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking pbr v1.0.4
[INFO] [stderr]     Checking ntpclient v0.0.1 (https://github.com/willem66745/ntpclient-rust#7e3bdf60)
[INFO] [stderr]     Checking ransid v0.4.8
[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 `redox_syscall` 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" "2e3dcf38f9730ee002c237e9fe970e681137e1cf03c0ef89f93681b32403974f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3dcf38f9730ee002c237e9fe970e681137e1cf03c0ef89f93681b32403974f", kill_on_drop: false }`
[INFO] [stdout] 2e3dcf38f9730ee002c237e9fe970e681137e1cf03c0ef89f93681b32403974f
