[INFO] cloning repository https://github.com/disordinary/toodb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/disordinary/toodb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdisordinary%2Ftoodb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdisordinary%2Ftoodb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78a377585927e45602dbee518b94a05d8acf7b09
[INFO] testing disordinary/toodb 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%2Fdisordinary%2Ftoodb" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/disordinary/toodb 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/disordinary/toodb
[INFO] finished tweaking git repo https://github.com/disordinary/toodb
[INFO] tweaked toml for git repo https://github.com/disordinary/toodb written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/disordinary/toodb 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]  Downloading crates ...
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded nom v1.2.4
[INFO] [stderr]   Downloaded serde_codegen_internals v0.11.1
[INFO] [stderr]   Downloaded syn v0.10.3
[INFO] [stderr]   Downloaded matches v0.1.4
[INFO] [stderr]   Downloaded toml v0.1.30
[INFO] [stderr]   Downloaded semver v0.2.3
[INFO] [stderr]   Downloaded unicode-normalization v0.1.2
[INFO] [stderr]   Downloaded serde_codegen v0.8.19
[INFO] [stderr]   Downloaded serde v0.8.19
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded serde_derive v0.8.19
[INFO] [stderr]   Downloaded clippy v0.0.103
[INFO] [stderr]   Downloaded clippy_lints v0.0.103
[INFO] [stderr]   Downloaded quote v0.3.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d0d26eae46cef8261efb9abe57f21f318af1b1513ba3792271b41adbd44f2ae
[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" "6d0d26eae46cef8261efb9abe57f21f318af1b1513ba3792271b41adbd44f2ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d0d26eae46cef8261efb9abe57f21f318af1b1513ba3792271b41adbd44f2ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0d26eae46cef8261efb9abe57f21f318af1b1513ba3792271b41adbd44f2ae", kill_on_drop: false }`
[INFO] [stdout] 6d0d26eae46cef8261efb9abe57f21f318af1b1513ba3792271b41adbd44f2ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 667d6a11defb41c7dd0dd6c9e02dddd8d0ab80ff919683ccc8a135272ff347fd
[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" "667d6a11defb41c7dd0dd6c9e02dddd8d0ab80ff919683ccc8a135272ff347fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v0.3.10
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling quine-mc_cluskey v0.2.4
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.2
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling serde v0.8.19
[INFO] [stderr]    Compiling syn v0.10.3
[INFO] [stderr]    Compiling semver v0.2.3
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.1
[INFO] [stderr]    Compiling serde_codegen v0.8.19
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling serde_derive v0.8.19
[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-0.8.19/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" "667d6a11defb41c7dd0dd6c9e02dddd8d0ab80ff919683ccc8a135272ff347fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "667d6a11defb41c7dd0dd6c9e02dddd8d0ab80ff919683ccc8a135272ff347fd", kill_on_drop: false }`
[INFO] [stdout] 667d6a11defb41c7dd0dd6c9e02dddd8d0ab80ff919683ccc8a135272ff347fd