[INFO] cloning repository https://github.com/jonhoo/please-ignore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonhoo/please-ignore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Fplease-ignore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Fplease-ignore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85a172299fdebf13af49e763434c06ff3af61adf
[INFO] testing jonhoo/please-ignore against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Fplease-ignore" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonhoo/please-ignore on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonhoo/please-ignore
[INFO] finished tweaking git repo https://github.com/jonhoo/please-ignore
[INFO] tweaked toml for git repo https://github.com/jonhoo/please-ignore written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jonhoo/please-ignore already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/jonhoo/tarpc.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scoped-tls v0.1.0
[INFO] [stderr]   Downloaded log v0.3.6
[INFO] [stderr]   Downloaded serde_derive v0.9.11
[INFO] [stderr]   Downloaded lazy_static v0.2.4
[INFO] [stderr]   Downloaded syn v0.11.9
[INFO] [stderr]   Downloaded redox_syscall v0.1.16
[INFO] [stderr]   Downloaded nom v1.2.4
[INFO] [stderr]   Downloaded rustc-serialize v0.3.22
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded num-traits v0.1.37
[INFO] [stderr]   Downloaded gcc v0.3.43
[INFO] [stderr]   Downloaded rand v0.3.15
[INFO] [stderr]   Downloaded libc v0.2.21
[INFO] [stderr]   Downloaded serde v0.9.11
[INFO] [stderr]   Downloaded net2 v0.2.27
[INFO] [stderr]   Downloaded miow v0.2.0
[INFO] [stderr]   Downloaded itertools v0.5.9
[INFO] [stderr]   Downloaded tokio-proto v0.1.0
[INFO] [stderr]   Downloaded bufstream v0.1.2
[INFO] [stderr]   Downloaded futures v0.1.10
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded cfg-if v0.1.0
[INFO] [stderr]   Downloaded mio v0.6.4
[INFO] [stderr]   Downloaded serde_codegen_internals v0.14.1
[INFO] [stderr]   Downloaded conhash v0.3.2
[INFO] [stderr]   Downloaded tokio-core v0.1.4
[INFO] [stderr]   Downloaded semver v0.2.3
[INFO] [stderr]   Downloaded time v0.1.36
[INFO] [stderr]   Downloaded lazycell v0.4.0
[INFO] [stderr]   Downloaded memcached-rs v0.1.2
[INFO] [stderr]   Downloaded bincode v1.0.0-alpha5
[INFO] [stderr]   Downloaded either v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfb8bf85e5312bb5566003cd4e99a84d6be48459894ca80313ac7f69eadf0d6f
[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" "cfb8bf85e5312bb5566003cd4e99a84d6be48459894ca80313ac7f69eadf0d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfb8bf85e5312bb5566003cd4e99a84d6be48459894ca80313ac7f69eadf0d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfb8bf85e5312bb5566003cd4e99a84d6be48459894ca80313ac7f69eadf0d6f", kill_on_drop: false }`
[INFO] [stdout] cfb8bf85e5312bb5566003cd4e99a84d6be48459894ca80313ac7f69eadf0d6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "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] 9f1efdf19681fa7fc1d73967dd851717af64946f6616b54a8dbc07354b1bd6a4
[INFO] running `Command { std: "docker" "start" "-a" "9f1efdf19681fa7fc1d73967dd851717af64946f6616b54a8dbc07354b1bd6a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling gcc v0.3.43
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling either v1.0.3
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling serde v0.9.11
[INFO] [stderr]    Compiling lazy_static v0.2.4
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling bufstream v0.1.2
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]    Compiling itertools v0.5.9
[INFO] [stderr]    Compiling futures v0.1.10
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling net2 v0.2.27
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling unix_socket v0.5.0
[INFO] [stderr]    Compiling mio v0.6.4
[INFO] [stderr]    Compiling semver v0.2.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling tarpc-plugins v0.1.0 (https://github.com/jonhoo/tarpc.git?branch=pub#94b14dfe)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/tarpc-30a8cd6656c1a0d4/94b14df/src/plugins/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tarpc-plugins`
[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" "9f1efdf19681fa7fc1d73967dd851717af64946f6616b54a8dbc07354b1bd6a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f1efdf19681fa7fc1d73967dd851717af64946f6616b54a8dbc07354b1bd6a4", kill_on_drop: false }`
[INFO] [stdout] 9f1efdf19681fa7fc1d73967dd851717af64946f6616b54a8dbc07354b1bd6a4