[INFO] fetching crate certitude 1.1.0...
[INFO] testing certitude-1.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate certitude 1.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate certitude 1.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate certitude 1.1.0
[INFO] finished tweaking crates.io crate certitude 1.1.0
[INFO] tweaked toml for crates.io crate certitude 1.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fabad55ffae854d60949eb036f9339d685e9ef8ae3a5828e6a09c6d2d4cfc451
[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" "fabad55ffae854d60949eb036f9339d685e9ef8ae3a5828e6a09c6d2d4cfc451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fabad55ffae854d60949eb036f9339d685e9ef8ae3a5828e6a09c6d2d4cfc451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabad55ffae854d60949eb036f9339d685e9ef8ae3a5828e6a09c6d2d4cfc451", kill_on_drop: false }`
[INFO] [stdout] fabad55ffae854d60949eb036f9339d685e9ef8ae3a5828e6a09c6d2d4cfc451
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e5b3a46f8261bd41c5eeb81069e123e8259f5d18d3e18949c76732d7a79bf20
[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" "0e5b3a46f8261bd41c5eeb81069e123e8259f5d18d3e18949c76732d7a79bf20", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling certitude v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `backend` in this scope
[INFO] [stdout]   --> src/platform.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     backend(encoded_certs, hostname)
[INFO] [stdout]    |     ^^^^^^^ not found in this scope
[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 E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `certitude`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0e5b3a46f8261bd41c5eeb81069e123e8259f5d18d3e18949c76732d7a79bf20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e5b3a46f8261bd41c5eeb81069e123e8259f5d18d3e18949c76732d7a79bf20", kill_on_drop: false }`
[INFO] [stdout] 0e5b3a46f8261bd41c5eeb81069e123e8259f5d18d3e18949c76732d7a79bf20