[INFO] fetching crate rill 0.21.0...
[INFO] testing rill-0.21.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rill 0.21.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rill 0.21.0 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 rill 0.21.0
[INFO] finished tweaking crates.io crate rill 0.21.0
[INFO] tweaked toml for crates.io crate rill 0.21.0 written to /workspace/builds/worker-14/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-tungstenite v0.13.0
[INFO] [stderr]   Downloaded meio v0.82.0
[INFO] [stderr]   Downloaded tungstenite v0.12.0
[INFO] [stderr]   Downloaded rill-protocol v0.21.0
[INFO] [stderr]   Downloaded meio-protocol v0.82.0
[INFO] [stderr]   Downloaded meio-connect v0.82.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 422ffc2a7c7bad942b661ba5523841bbd8d645e1e84231e84b98e1e9e13a1a20
[INFO] running `Command { std: "docker" "start" "-a" "422ffc2a7c7bad942b661ba5523841bbd8d645e1e84231e84b98e1e9e13a1a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "422ffc2a7c7bad942b661ba5523841bbd8d645e1e84231e84b98e1e9e13a1a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "422ffc2a7c7bad942b661ba5523841bbd8d645e1e84231e84b98e1e9e13a1a20", kill_on_drop: false }`
[INFO] [stdout] 422ffc2a7c7bad942b661ba5523841bbd8d645e1e84231e84b98e1e9e13a1a20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b00faa5b3da8529bd84082fba91d6ab1beb4a7102e59ebfc8d10660a2f176048
[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" "b00faa5b3da8529bd84082fba91d6ab1beb4a7102e59ebfc8d10660a2f176048", kill_on_drop: false }`
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling meio-protocol v0.82.0
[INFO] [stderr]    Compiling serde_qs v0.8.4
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tungstenite v0.12.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling rill-protocol v0.21.0
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling tokio-tungstenite v0.13.0
[INFO] [stderr]    Compiling h2 v0.3.4
[INFO] [stderr]    Compiling meio v0.82.0
[INFO] [stderr]    Compiling hyper v0.14.12
[INFO] [stderr]    Compiling meio-connect v0.82.0
[INFO] [stderr]    Compiling rill v0.21.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "b00faa5b3da8529bd84082fba91d6ab1beb4a7102e59ebfc8d10660a2f176048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00faa5b3da8529bd84082fba91d6ab1beb4a7102e59ebfc8d10660a2f176048", kill_on_drop: false }`
[INFO] [stdout] b00faa5b3da8529bd84082fba91d6ab1beb4a7102e59ebfc8d10660a2f176048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] fb284b1b47f78f271727fc9932e6f785ea9ad9f7820d568c3ac63544ed486bd4
[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" "fb284b1b47f78f271727fc9932e6f785ea9ad9f7820d568c3ac63544ed486bd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling ctrlc v3.2.0
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rill v0.21.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.63s
[INFO] running `Command { std: "docker" "inspect" "fb284b1b47f78f271727fc9932e6f785ea9ad9f7820d568c3ac63544ed486bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb284b1b47f78f271727fc9932e6f785ea9ad9f7820d568c3ac63544ed486bd4", kill_on_drop: false }`
[INFO] [stdout] fb284b1b47f78f271727fc9932e6f785ea9ad9f7820d568c3ac63544ed486bd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] d4e30a74649eb350b65e2ebb4914804edd71aaf009c99c51db326fe3c9834bef
[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" "d4e30a74649eb350b65e2ebb4914804edd71aaf009c99c51db326fe3c9834bef", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rill-856f70167b2dc376)
[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 rill
[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" "d4e30a74649eb350b65e2ebb4914804edd71aaf009c99c51db326fe3c9834bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e30a74649eb350b65e2ebb4914804edd71aaf009c99c51db326fe3c9834bef", kill_on_drop: false }`
[INFO] [stdout] d4e30a74649eb350b65e2ebb4914804edd71aaf009c99c51db326fe3c9834bef