[INFO] cloning repository https://github.com/rockwotj/jump
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rockwotj/jump" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frockwotj%2Fjump", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frockwotj%2Fjump'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ab2554d3cffecb9273c818e3a0396e559886815
[INFO] checking rockwotj/jump against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frockwotj%2Fjump" "/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/rockwotj/jump on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rockwotj/jump
[INFO] finished tweaking git repo https://github.com/rockwotj/jump
[INFO] tweaked toml for git repo https://github.com/rockwotj/jump written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/rockwotj/jump already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", 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] b4616fbf1903cff052d5cacbcd04aa30857bcb313b11ff0c0539729d62f34279
[INFO] running `Command { std: "docker" "start" "-a" "b4616fbf1903cff052d5cacbcd04aa30857bcb313b11ff0c0539729d62f34279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4616fbf1903cff052d5cacbcd04aa30857bcb313b11ff0c0539729d62f34279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4616fbf1903cff052d5cacbcd04aa30857bcb313b11ff0c0539729d62f34279", kill_on_drop: false }`
[INFO] [stdout] b4616fbf1903cff052d5cacbcd04aa30857bcb313b11ff0c0539729d62f34279
[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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae867e0acf0feab269ce070c52099cf1ddb00afd44e5759db9033e0b9815d7e4
[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" "ae867e0acf0feab269ce070c52099cf1ddb00afd44e5759db9033e0b9815d7e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v0.3.10
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking serde v0.8.20
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]    Compiling syn v0.10.5
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking clap v2.19.2
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.2
[INFO] [stderr]    Compiling serde_codegen v0.8.20
[INFO] [stderr]     Checking serde_json v0.8.4
[INFO] [stderr]    Compiling serde_derive v0.8.20
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-0.8.20/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_derive`.
[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" "ae867e0acf0feab269ce070c52099cf1ddb00afd44e5759db9033e0b9815d7e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae867e0acf0feab269ce070c52099cf1ddb00afd44e5759db9033e0b9815d7e4", kill_on_drop: false }`
[INFO] [stdout] ae867e0acf0feab269ce070c52099cf1ddb00afd44e5759db9033e0b9815d7e4
