[INFO] fetching crate ipv8 0.1.0...
[INFO] testing ipv8-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ipv8 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate ipv8 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ipv8 0.1.0
[INFO] finished tweaking crates.io crate ipv8 0.1.0
[INFO] tweaked toml for crates.io crate ipv8 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e2c3697058bd0d3f9b0979b2043a973862e6f49a4d5b8f90d46d1d4cb58a003
[INFO] running `Command { std: "docker" "start" "-a" "2e2c3697058bd0d3f9b0979b2043a973862e6f49a4d5b8f90d46d1d4cb58a003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e2c3697058bd0d3f9b0979b2043a973862e6f49a4d5b8f90d46d1d4cb58a003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2c3697058bd0d3f9b0979b2043a973862e6f49a4d5b8f90d46d1d4cb58a003", kill_on_drop: false }`
[INFO] [stdout] 2e2c3697058bd0d3f9b0979b2043a973862e6f49a4d5b8f90d46d1d4cb58a003
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c61960d963046165f7077fa30f32539f03979caeb0d3df9b8ff08bb5a6c106a
[INFO] running `Command { std: "docker" "start" "-a" "9c61960d963046165f7077fa30f32539f03979caeb0d3df9b8ff08bb5a6c106a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ipv8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]  --> src/ipv8.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   config: Config,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "9c61960d963046165f7077fa30f32539f03979caeb0d3df9b8ff08bb5a6c106a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c61960d963046165f7077fa30f32539f03979caeb0d3df9b8ff08bb5a6c106a", kill_on_drop: false }`
[INFO] [stdout] 9c61960d963046165f7077fa30f32539f03979caeb0d3df9b8ff08bb5a6c106a
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5cfc7fba2ff3dd2df6bc57fcf4f6470966025b6d75d0a83e93c09f89673a8e0
[INFO] running `Command { std: "docker" "start" "-a" "a5cfc7fba2ff3dd2df6bc57fcf4f6470966025b6d75d0a83e93c09f89673a8e0", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]  --> src/ipv8.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   config: Config,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ipv8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]  --> src/ipv8.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   config: Config,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "a5cfc7fba2ff3dd2df6bc57fcf4f6470966025b6d75d0a83e93c09f89673a8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5cfc7fba2ff3dd2df6bc57fcf4f6470966025b6d75d0a83e93c09f89673a8e0", kill_on_drop: false }`
[INFO] [stdout] a5cfc7fba2ff3dd2df6bc57fcf4f6470966025b6d75d0a83e93c09f89673a8e0
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ad3853d0bea2baa239036286e77a8745a93ae26879d1634a53b6a08dfe98bb9a
[INFO] running `Command { std: "docker" "start" "-a" "ad3853d0bea2baa239036286e77a8745a93ae26879d1634a53b6a08dfe98bb9a", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]  --> src/ipv8.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   config: Config,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ipv8` (lib) generated 1 warning
[INFO] [stderr] warning: `ipv8` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ipv8-32795533815ada35)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ipv8
[INFO] [stdout] running 0 tests
[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] error[E0659]: `ipv8` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ipv8::IPv8;
[INFO] [stderr]   |     ^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `ipv8` could refer to a crate passed with `--extern`
[INFO] [stderr]   = help: use `::ipv8` to refer to this crate unambiguously
[INFO] [stderr] note: `ipv8` could also refer to the module defined here
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod ipv8;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   = help: use `crate::ipv8` 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" "ad3853d0bea2baa239036286e77a8745a93ae26879d1634a53b6a08dfe98bb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad3853d0bea2baa239036286e77a8745a93ae26879d1634a53b6a08dfe98bb9a", kill_on_drop: false }`
[INFO] [stdout] ad3853d0bea2baa239036286e77a8745a93ae26879d1634a53b6a08dfe98bb9a