[INFO] cloning repository https://github.com/mlsteele/bittles
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mlsteele/bittles" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlsteele%2Fbittles", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlsteele%2Fbittles'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68441273c2e5aaa5e7e19d35c2b8fdeee0ac92af
[INFO] checking mlsteele/bittles/68441273c2e5aaa5e7e19d35c2b8fdeee0ac92af against master#336209eef13882bd1e211b24779584cb7ef911eb for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlsteele%2Fbittles" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mlsteele/bittles on toolchain 336209eef13882bd1e211b24779584cb7ef911eb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mlsteele/bittles
[INFO] finished tweaking git repo https://github.com/mlsteele/bittles
[INFO] tweaked toml for git repo https://github.com/mlsteele/bittles written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mlsteele/bittles already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slog-async v2.0.1
[INFO] [stderr]   Downloaded take_mut v0.1.3
[INFO] [stderr]   Downloaded slog-term v2.0.1
[INFO] [stderr]   Downloaded mio v0.6.7
[INFO] [stderr]   Downloaded error-chain v0.9.0
[INFO] [stderr]   Downloaded bytes v0.4.3
[INFO] [stderr]   Downloaded slog v2.0.5
[INFO] [stderr]   Downloaded bip_bencode v0.3.0
[INFO] [stderr]   Downloaded hyper v0.10.8
[INFO] [stderr]   Downloaded serde_cbor v0.5.2
[INFO] [stderr]   Downloaded ring v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e69d0372fe85fdc9da844fcf1012b14e3e8dfdd42dcc4f01aa9fd6e2bf0d8a7
[INFO] running `Command { std: "docker" "start" "-a" "1e69d0372fe85fdc9da844fcf1012b14e3e8dfdd42dcc4f01aa9fd6e2bf0d8a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e69d0372fe85fdc9da844fcf1012b14e3e8dfdd42dcc4f01aa9fd6e2bf0d8a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e69d0372fe85fdc9da844fcf1012b14e3e8dfdd42dcc4f01aa9fd6e2bf0d8a7", kill_on_drop: false }`
[INFO] [stdout] 1e69d0372fe85fdc9da844fcf1012b14e3e8dfdd42dcc4f01aa9fd6e2bf0d8a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b46c623f723e4a4592fcace281cc4b0cbacf58beb327465c1195e316e1165e09
[INFO] running `Command { std: "docker" "start" "-a" "b46c623f723e4a4592fcace281cc4b0cbacf58beb327465c1195e316e1165e09", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling gcc v0.3.45
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rayon-core v1.0.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking log v0.3.7
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking num-traits v0.1.37
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]     Checking unicode-bidi v0.2.5
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.3.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking unicode-normalization v0.1.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking bytes v0.4.3
[INFO] [stderr]     Checking num v0.1.37
[INFO] [stderr]    Compiling backtrace-sys v0.1.10
[INFO] [stderr]    Compiling hyper v0.10.8
[INFO] [stderr]     Checking net2 v0.2.27
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]     Checking futures v0.1.13
[INFO] [stderr]     Checking slog v2.0.5
[INFO] [stderr]     Checking idna v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stdout] error[E0446]: private type `NeverStruct` in public interface
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slog-2.0.5/src/lib.rs:1180:5
[INFO] [stdout]      |
[INFO] [stdout] 1180 |     type Err = Never;
[INFO] [stdout]      |     ^^^^^^^^ can't leak private type
[INFO] [stdout] ...
[INFO] [stdout] 2868 | struct NeverStruct(());
[INFO] [stdout]      | ------------------ `NeverStruct` declared as private
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private type `NeverStruct` in public interface
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slog-2.0.5/src/lib.rs:1465:5
[INFO] [stdout]      |
[INFO] [stdout] 1465 |     type Err = Never;
[INFO] [stdout]      |     ^^^^^^^^ can't leak private type
[INFO] [stdout] ...
[INFO] [stdout] 2868 | struct NeverStruct(());
[INFO] [stdout]      | ------------------ `NeverStruct` declared as private
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private type `NeverStruct` in public interface
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slog-2.0.5/src/lib.rs:1630:5
[INFO] [stdout]      |
[INFO] [stdout] 1630 |     type Err = Never;
[INFO] [stdout]      |     ^^^^^^^^ can't leak private type
[INFO] [stdout] ...
[INFO] [stdout] 2868 | struct NeverStruct(());
[INFO] [stdout]      | ------------------ `NeverStruct` declared as private
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private type `NeverStruct` in public interface
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slog-2.0.5/src/lib.rs:1662:5
[INFO] [stdout]      |
[INFO] [stdout] 1662 |     type Err = Never;
[INFO] [stdout]      |     ^^^^^^^^ can't leak private type
[INFO] [stdout] ...
[INFO] [stdout] 2868 | struct NeverStruct(());
[INFO] [stdout]      | ------------------ `NeverStruct` declared as private
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0446`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `slog` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b46c623f723e4a4592fcace281cc4b0cbacf58beb327465c1195e316e1165e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46c623f723e4a4592fcace281cc4b0cbacf58beb327465c1195e316e1165e09", kill_on_drop: false }`
[INFO] [stdout] b46c623f723e4a4592fcace281cc4b0cbacf58beb327465c1195e316e1165e09