[INFO] fetching crate flint 2.2.0...
[INFO] testing flint-2.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate flint 2.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate flint 2.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flint 2.2.0
[INFO] finished tweaking crates.io crate flint 2.2.0
[INFO] tweaked toml for crates.io crate flint 2.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d590d7e4cdc7e00819db4d3e377a8c0ca6d5f28cc30a4cbe4012b6dc60e841e7
[INFO] running `Command { std: "docker" "start" "-a" "d590d7e4cdc7e00819db4d3e377a8c0ca6d5f28cc30a4cbe4012b6dc60e841e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d590d7e4cdc7e00819db4d3e377a8c0ca6d5f28cc30a4cbe4012b6dc60e841e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d590d7e4cdc7e00819db4d3e377a8c0ca6d5f28cc30a4cbe4012b6dc60e841e7", kill_on_drop: false }`
[INFO] [stdout] d590d7e4cdc7e00819db4d3e377a8c0ca6d5f28cc30a4cbe4012b6dc60e841e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a21ccac5f45f991a0a313623a354747e2f6417619496a6ae80a7dba7338cda9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9a21ccac5f45f991a0a313623a354747e2f6417619496a6ae80a7dba7338cda9", kill_on_drop: false }`
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling sane v0.2.1
[INFO] [stderr]    Compiling flint v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.86s
[INFO] running `Command { std: "docker" "inspect" "9a21ccac5f45f991a0a313623a354747e2f6417619496a6ae80a7dba7338cda9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a21ccac5f45f991a0a313623a354747e2f6417619496a6ae80a7dba7338cda9", kill_on_drop: false }`
[INFO] [stdout] 9a21ccac5f45f991a0a313623a354747e2f6417619496a6ae80a7dba7338cda9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 989f680b8a35bae6b18eb14552fe81cafd7e2ad31275c5a1bdbbe8abac02a7a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "989f680b8a35bae6b18eb14552fe81cafd7e2ad31275c5a1bdbbe8abac02a7a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling flint v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "989f680b8a35bae6b18eb14552fe81cafd7e2ad31275c5a1bdbbe8abac02a7a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "989f680b8a35bae6b18eb14552fe81cafd7e2ad31275c5a1bdbbe8abac02a7a3", kill_on_drop: false }`
[INFO] [stdout] 989f680b8a35bae6b18eb14552fe81cafd7e2ad31275c5a1bdbbe8abac02a7a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 96e09e875526e05b90226d2f60ec5eccf37be6c501107a511fbecd464bd47e2d
[INFO] running `Command { std: "docker" "start" "-a" "96e09e875526e05b90226d2f60ec5eccf37be6c501107a511fbecd464bd47e2d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/flint-7bc0764f3f13fd3d
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "96e09e875526e05b90226d2f60ec5eccf37be6c501107a511fbecd464bd47e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96e09e875526e05b90226d2f60ec5eccf37be6c501107a511fbecd464bd47e2d", kill_on_drop: false }`
[INFO] [stdout] 96e09e875526e05b90226d2f60ec5eccf37be6c501107a511fbecd464bd47e2d