[INFO] fetching crate user_stable_vtable 0.2.1...
[INFO] checking user_stable_vtable-0.2.1 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate user_stable_vtable 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate user_stable_vtable 0.2.1 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 crates.io crate user_stable_vtable 0.2.1
[INFO] finished tweaking crates.io crate user_stable_vtable 0.2.1
[INFO] tweaked toml for crates.io crate user_stable_vtable 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b662733de2b76b420ba4731ff788e6fdd9cc27cb9cb8f273cb5ccd0ec8ae1133
[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" "b662733de2b76b420ba4731ff788e6fdd9cc27cb9cb8f273cb5ccd0ec8ae1133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b662733de2b76b420ba4731ff788e6fdd9cc27cb9cb8f273cb5ccd0ec8ae1133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b662733de2b76b420ba4731ff788e6fdd9cc27cb9cb8f273cb5ccd0ec8ae1133", kill_on_drop: false }`
[INFO] [stdout] b662733de2b76b420ba4731ff788e6fdd9cc27cb9cb8f273cb5ccd0ec8ae1133
[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=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] 925033fb6cd40fd7c671be9248c213e59db70d5bea6b4527186fa995f3b7139c
[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" "925033fb6cd40fd7c671be9248c213e59db70d5bea6b4527186fa995f3b7139c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking user_stable_vtable v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "925033fb6cd40fd7c671be9248c213e59db70d5bea6b4527186fa995f3b7139c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925033fb6cd40fd7c671be9248c213e59db70d5bea6b4527186fa995f3b7139c", kill_on_drop: false }`
[INFO] [stdout] 925033fb6cd40fd7c671be9248c213e59db70d5bea6b4527186fa995f3b7139c
