[INFO] fetching crate maybe_null 0.2.0...
[INFO] testing maybe_null-0.2.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate maybe_null 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate maybe_null 0.2.0
[INFO] finished tweaking crates.io crate maybe_null 0.2.0
[INFO] tweaked toml for crates.io crate maybe_null 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate maybe_null 0.2.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate maybe_null 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3adb0c20ac71b2f5dd6ac6780590d7d0326a7f92ba6d79ad4184d036c0dc6f89
[INFO] running `Command { std: "docker" "start" "-a" "3adb0c20ac71b2f5dd6ac6780590d7d0326a7f92ba6d79ad4184d036c0dc6f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3adb0c20ac71b2f5dd6ac6780590d7d0326a7f92ba6d79ad4184d036c0dc6f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3adb0c20ac71b2f5dd6ac6780590d7d0326a7f92ba6d79ad4184d036c0dc6f89", kill_on_drop: false }`
[INFO] [stdout] 3adb0c20ac71b2f5dd6ac6780590d7d0326a7f92ba6d79ad4184d036c0dc6f89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ba39e662ea6bbd4ca592e36a0a9caf6e9bb238bcbe0cddcae4ad2d2d1be3983
[INFO] running `Command { std: "docker" "start" "-a" "8ba39e662ea6bbd4ca592e36a0a9caf6e9bb238bcbe0cddcae4ad2d2d1be3983", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe_null v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "8ba39e662ea6bbd4ca592e36a0a9caf6e9bb238bcbe0cddcae4ad2d2d1be3983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba39e662ea6bbd4ca592e36a0a9caf6e9bb238bcbe0cddcae4ad2d2d1be3983", kill_on_drop: false }`
[INFO] [stdout] 8ba39e662ea6bbd4ca592e36a0a9caf6e9bb238bcbe0cddcae4ad2d2d1be3983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0066b12205370b68157a9b92f980c5d15e125f4ed25df467b88dd62c2ede9aca
[INFO] running `Command { std: "docker" "start" "-a" "0066b12205370b68157a9b92f980c5d15e125f4ed25df467b88dd62c2ede9aca", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe_null v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "0066b12205370b68157a9b92f980c5d15e125f4ed25df467b88dd62c2ede9aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0066b12205370b68157a9b92f980c5d15e125f4ed25df467b88dd62c2ede9aca", kill_on_drop: false }`
[INFO] [stdout] 0066b12205370b68157a9b92f980c5d15e125f4ed25df467b88dd62c2ede9aca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b48cff75a6e381d9a624ef3d9baaff3b2c659c8a380ce222efe07fa5af10cf8
[INFO] running `Command { std: "docker" "start" "-a" "7b48cff75a6e381d9a624ef3d9baaff3b2c659c8a380ce222efe07fa5af10cf8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/maybe_null-7e847ac1b3408142)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests maybe_null
[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] [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" "7b48cff75a6e381d9a624ef3d9baaff3b2c659c8a380ce222efe07fa5af10cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b48cff75a6e381d9a624ef3d9baaff3b2c659c8a380ce222efe07fa5af10cf8", kill_on_drop: false }`
[INFO] [stdout] 7b48cff75a6e381d9a624ef3d9baaff3b2c659c8a380ce222efe07fa5af10cf8