[INFO] fetching crate nyar-collatz 0.1.0...
[INFO] testing nyar-collatz-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate nyar-collatz 0.1.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate nyar-collatz 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nyar-collatz 0.1.0
[INFO] finished tweaking crates.io crate nyar-collatz 0.1.0
[INFO] tweaked toml for crates.io crate nyar-collatz 0.1.0 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9ee726b5f46d7cc0d809c146559d97d0781a5fc74ad3d38180aff7c4c9237c4
[INFO] running `Command { std: "docker" "start" "-a" "d9ee726b5f46d7cc0d809c146559d97d0781a5fc74ad3d38180aff7c4c9237c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9ee726b5f46d7cc0d809c146559d97d0781a5fc74ad3d38180aff7c4c9237c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9ee726b5f46d7cc0d809c146559d97d0781a5fc74ad3d38180aff7c4c9237c4", kill_on_drop: false }`
[INFO] [stdout] d9ee726b5f46d7cc0d809c146559d97d0781a5fc74ad3d38180aff7c4c9237c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4af209cfcdfd5e7431f28309607475e3de06cb8b583a3fa7fbaea462d390bed5
[INFO] running `Command { std: "docker" "start" "-a" "4af209cfcdfd5e7431f28309607475e3de06cb8b583a3fa7fbaea462d390bed5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling nyar-collatz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.09s
[INFO] running `Command { std: "docker" "inspect" "4af209cfcdfd5e7431f28309607475e3de06cb8b583a3fa7fbaea462d390bed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4af209cfcdfd5e7431f28309607475e3de06cb8b583a3fa7fbaea462d390bed5", kill_on_drop: false }`
[INFO] [stdout] 4af209cfcdfd5e7431f28309607475e3de06cb8b583a3fa7fbaea462d390bed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e8dda3732c1283cf5f0b764c6fd02fcf885d5a3ff6edd7b4a9331170d36263d
[INFO] running `Command { std: "docker" "start" "-a" "3e8dda3732c1283cf5f0b764c6fd02fcf885d5a3ff6edd7b4a9331170d36263d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nyar-collatz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "3e8dda3732c1283cf5f0b764c6fd02fcf885d5a3ff6edd7b4a9331170d36263d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8dda3732c1283cf5f0b764c6fd02fcf885d5a3ff6edd7b4a9331170d36263d", kill_on_drop: false }`
[INFO] [stdout] 3e8dda3732c1283cf5f0b764c6fd02fcf885d5a3ff6edd7b4a9331170d36263d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9aeff38f05feb616e1b1afe23f45624970c4d25cc93aac41c73d8e4cad9cb68a
[INFO] running `Command { std: "docker" "start" "-a" "9aeff38f05feb616e1b1afe23f45624970c4d25cc93aac41c73d8e4cad9cb68a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collatz-0e57860b2ba2af0f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test collatz64::test::collatz_13 ... ok
[INFO] [stdout] test collatz64::test::test_longest_collatz ... ok
[INFO] [stdout] test collatz::test::collatz_13 ... ok
[INFO] [stdout] test collatz64::test::test_longest_collatz_memo ... ok
[INFO] [stdout] test collatz64::test::collatz_0 - should panic ... ok
[INFO] [stdout] test collatz::test::collatz_0 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests collatz
[INFO] [stderr] error[E0659]: `collatz` is ambiguous
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub use collatz::Collatz;
[INFO] [stderr]   |         ^^^^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr]   = note: ambiguous because of multiple potential import sources
[INFO] [stderr]   = note: `collatz` could refer to a crate passed with `--extern`
[INFO] [stderr]   = help: use `::collatz` to refer to this crate unambiguously
[INFO] [stderr] note: `collatz` could also refer to the module defined here
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub mod collatz;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: use `crate::collatz` 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" "9aeff38f05feb616e1b1afe23f45624970c4d25cc93aac41c73d8e4cad9cb68a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aeff38f05feb616e1b1afe23f45624970c4d25cc93aac41c73d8e4cad9cb68a", kill_on_drop: false }`
[INFO] [stdout] 9aeff38f05feb616e1b1afe23f45624970c4d25cc93aac41c73d8e4cad9cb68a