[INFO] fetching crate poloto-evcxr 0.2.0...
[INFO] testing poloto-evcxr-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate poloto-evcxr 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate poloto-evcxr 0.2.0
[INFO] finished tweaking crates.io crate poloto-evcxr 0.2.0
[INFO] tweaked toml for crates.io crate poloto-evcxr 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate poloto-evcxr 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate poloto-evcxr 0.2.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tagu v0.1.0
[INFO] [stderr]   Downloaded poloto v19.1.0
[INFO] [stderr]   Downloaded base64 v0.21.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b81f4adcc2c6363cb1de9318e522bc1e69867333558e8176b87e0b9a922154ab
[INFO] running `Command { std: "docker" "start" "-a" "b81f4adcc2c6363cb1de9318e522bc1e69867333558e8176b87e0b9a922154ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b81f4adcc2c6363cb1de9318e522bc1e69867333558e8176b87e0b9a922154ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b81f4adcc2c6363cb1de9318e522bc1e69867333558e8176b87e0b9a922154ab", kill_on_drop: false }`
[INFO] [stdout] b81f4adcc2c6363cb1de9318e522bc1e69867333558e8176b87e0b9a922154ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8660e374d4f0824f0f878300896181760adf3c8c8bd680c607dc8e74665ffa51
[INFO] running `Command { std: "docker" "start" "-a" "8660e374d4f0824f0f878300896181760adf3c8c8bd680c607dc8e74665ffa51", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagu v0.1.0
[INFO] [stderr]    Compiling base64 v0.21.2
[INFO] [stderr]    Compiling poloto v19.1.0
[INFO] [stderr]    Compiling poloto-evcxr v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "8660e374d4f0824f0f878300896181760adf3c8c8bd680c607dc8e74665ffa51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8660e374d4f0824f0f878300896181760adf3c8c8bd680c607dc8e74665ffa51", kill_on_drop: false }`
[INFO] [stdout] 8660e374d4f0824f0f878300896181760adf3c8c8bd680c607dc8e74665ffa51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4c805fb3a99abc55e94a4be12434b9f7cbf7c108a67c14d8dbd473cf0215728
[INFO] running `Command { std: "docker" "start" "-a" "d4c805fb3a99abc55e94a4be12434b9f7cbf7c108a67c14d8dbd473cf0215728", kill_on_drop: false }`
[INFO] [stderr]    Compiling poloto-evcxr v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "d4c805fb3a99abc55e94a4be12434b9f7cbf7c108a67c14d8dbd473cf0215728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4c805fb3a99abc55e94a4be12434b9f7cbf7c108a67c14d8dbd473cf0215728", kill_on_drop: false }`
[INFO] [stdout] d4c805fb3a99abc55e94a4be12434b9f7cbf7c108a67c14d8dbd473cf0215728
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 663f041f7b4d3aabef190d7556c8cf3c176b9a2cea2fd1a645a7f57ef29f6737
[INFO] running `Command { std: "docker" "start" "-a" "663f041f7b4d3aabef190d7556c8cf3c176b9a2cea2fd1a645a7f57ef29f6737", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/poloto_evcxr-eeabb40a6f483f6f)
[INFO] [stdout] 
[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]    Doc-tests poloto_evcxr
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "663f041f7b4d3aabef190d7556c8cf3c176b9a2cea2fd1a645a7f57ef29f6737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663f041f7b4d3aabef190d7556c8cf3c176b9a2cea2fd1a645a7f57ef29f6737", kill_on_drop: false }`
[INFO] [stdout] 663f041f7b4d3aabef190d7556c8cf3c176b9a2cea2fd1a645a7f57ef29f6737