[INFO] cloning repository https://github.com/IntrepidPig/storier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IntrepidPig/storier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIntrepidPig%2Fstorier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIntrepidPig%2Fstorier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c127668567906e2b2cb7a4b5e140c7b0f2843dc
[INFO] testing IntrepidPig/storier against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIntrepidPig%2Fstorier" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IntrepidPig/storier on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IntrepidPig/storier
[INFO] finished tweaking git repo https://github.com/IntrepidPig/storier
[INFO] tweaked toml for git repo https://github.com/IntrepidPig/storier written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/IntrepidPig/storier already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14e6bbfdf87618ca7446a3cf6a7d76147b95c71410f8c8c8b09f809e6e29ea5f
[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" "14e6bbfdf87618ca7446a3cf6a7d76147b95c71410f8c8c8b09f809e6e29ea5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e6bbfdf87618ca7446a3cf6a7d76147b95c71410f8c8c8b09f809e6e29ea5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e6bbfdf87618ca7446a3cf6a7d76147b95c71410f8c8c8b09f809e6e29ea5f", kill_on_drop: false }`
[INFO] [stdout] 14e6bbfdf87618ca7446a3cf6a7d76147b95c71410f8c8c8b09f809e6e29ea5f
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 331069d25b8b01e24f0f93490fdd4d8ade9a071648bedc956d2865ffc59a8a1c
[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" "331069d25b8b01e24f0f93490fdd4d8ade9a071648bedc956d2865ffc59a8a1c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling typenum v1.5.2
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling yansi v0.3.3
[INFO] [stderr]    Compiling byte-tools v0.1.3
[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/yansi-0.3.3/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_fn))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yansi`
[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" "331069d25b8b01e24f0f93490fdd4d8ade9a071648bedc956d2865ffc59a8a1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "331069d25b8b01e24f0f93490fdd4d8ade9a071648bedc956d2865ffc59a8a1c", kill_on_drop: false }`
[INFO] [stdout] 331069d25b8b01e24f0f93490fdd4d8ade9a071648bedc956d2865ffc59a8a1c