[INFO] fetching crate nebula 0.0.1...
[INFO] checking nebula-0.0.1 against beta for pr-78714
[INFO] extracting crate nebula 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate nebula 0.0.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nebula 0.0.1
[INFO] finished tweaking crates.io crate nebula 0.0.1
[INFO] tweaked toml for crates.io crate nebula 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate nebula 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8bb40b2d4ba4a679aa3416a4e1d08b554259e59aa175e33aaca6f8369b01993
[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" "f8bb40b2d4ba4a679aa3416a4e1d08b554259e59aa175e33aaca6f8369b01993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8bb40b2d4ba4a679aa3416a4e1d08b554259e59aa175e33aaca6f8369b01993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8bb40b2d4ba4a679aa3416a4e1d08b554259e59aa175e33aaca6f8369b01993", kill_on_drop: false }`
[INFO] [stdout] f8bb40b2d4ba4a679aa3416a4e1d08b554259e59aa175e33aaca6f8369b01993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] 5227fa5b32f977ddaa570f4561f08cd7878272ff4804d4990fe1359ef3f1bae5
[INFO] running `Command { std: "docker" "start" "-a" "5227fa5b32f977ddaa570f4561f08cd7878272ff4804d4990fe1359ef3f1bae5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking urlencoding v1.0.0
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking headers v0.3.2
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking h2 v0.2.2
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking tokio-tungstenite v0.10.1
[INFO] [stderr]     Checking hyper v0.13.3
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking warp v0.2.2
[INFO] [stderr]     Checking nebula v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.73s
[INFO] running `Command { std: "docker" "inspect" "5227fa5b32f977ddaa570f4561f08cd7878272ff4804d4990fe1359ef3f1bae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5227fa5b32f977ddaa570f4561f08cd7878272ff4804d4990fe1359ef3f1bae5", kill_on_drop: false }`
[INFO] [stdout] 5227fa5b32f977ddaa570f4561f08cd7878272ff4804d4990fe1359ef3f1bae5