[INFO] fetching crate buff 0.1.0...
[INFO] testing buff-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate buff 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate buff 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buff 0.1.0
[INFO] finished tweaking crates.io crate buff 0.1.0
[INFO] tweaked toml for crates.io crate buff 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2355465a33671f8236500433e48d6df703ac31a5d60cf9bf019ae92cf6bd3b39
[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" "2355465a33671f8236500433e48d6df703ac31a5d60cf9bf019ae92cf6bd3b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2355465a33671f8236500433e48d6df703ac31a5d60cf9bf019ae92cf6bd3b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2355465a33671f8236500433e48d6df703ac31a5d60cf9bf019ae92cf6bd3b39", kill_on_drop: false }`
[INFO] [stdout] 2355465a33671f8236500433e48d6df703ac31a5d60cf9bf019ae92cf6bd3b39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--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] 95a9d016d3e25733bb1b479acdd91e10f922553c0135d1cd8c2643e494fbbee3
[INFO] running `Command { std: "docker" "start" "-a" "95a9d016d3e25733bb1b479acdd91e10f922553c0135d1cd8c2643e494fbbee3", kill_on_drop: false }`
[INFO] [stderr]    Compiling buff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "95a9d016d3e25733bb1b479acdd91e10f922553c0135d1cd8c2643e494fbbee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a9d016d3e25733bb1b479acdd91e10f922553c0135d1cd8c2643e494fbbee3", kill_on_drop: false }`
[INFO] [stdout] 95a9d016d3e25733bb1b479acdd91e10f922553c0135d1cd8c2643e494fbbee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--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] 24bcf261c3aa6bf014912e053f23cbb783ef8f4eca2f6b81eab210d4fb300132
[INFO] running `Command { std: "docker" "start" "-a" "24bcf261c3aa6bf014912e053f23cbb783ef8f4eca2f6b81eab210d4fb300132", kill_on_drop: false }`
[INFO] [stderr]    Compiling buff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/buff-148db8e64f3bcb3a)
[INFO] running `Command { std: "docker" "inspect" "24bcf261c3aa6bf014912e053f23cbb783ef8f4eca2f6b81eab210d4fb300132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24bcf261c3aa6bf014912e053f23cbb783ef8f4eca2f6b81eab210d4fb300132", kill_on_drop: false }`
[INFO] [stdout] 24bcf261c3aa6bf014912e053f23cbb783ef8f4eca2f6b81eab210d4fb300132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] a8bafd79044e50a6c73721a9498c6c9d1c9eb1e1339f2f1e6c6d709d0d254c86
[INFO] running `Command { std: "docker" "start" "-a" "a8bafd79044e50a6c73721a9498c6c9d1c9eb1e1339f2f1e6c6d709d0d254c86", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/buff-148db8e64f3bcb3a)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests buff
[INFO] [stderr] error[E0659]: `buff` is ambiguous
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub use buff::Buffer;
[INFO] [stderr]   |         ^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr]   = note: ambiguous because of multiple potential import sources
[INFO] [stderr]   = note: `buff` could refer to a crate passed with `--extern`
[INFO] [stderr]   = help: use `::buff` to refer to this crate unambiguously
[INFO] [stderr] note: `buff` could also refer to the module defined here
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod buff;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   = help: use `crate::buff` to refer to this module unambiguously
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0659`.
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "a8bafd79044e50a6c73721a9498c6c9d1c9eb1e1339f2f1e6c6d709d0d254c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8bafd79044e50a6c73721a9498c6c9d1c9eb1e1339f2f1e6c6d709d0d254c86", kill_on_drop: false }`
[INFO] [stdout] a8bafd79044e50a6c73721a9498c6c9d1c9eb1e1339f2f1e6c6d709d0d254c86