[INFO] fetching crate asking 0.0.2...
[INFO] testing asking-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate asking 0.0.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate asking 0.0.2 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 asking 0.0.2
[INFO] finished tweaking crates.io crate asking 0.0.2
[INFO] tweaked toml for crates.io crate asking 0.0.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate asking 0.0.2 already has a lockfile, it will not be regenerated
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] c0b0a3e4ea1b2698a059695b7df5923d249b6a8316af3e13935eedf63940f4f9
[INFO] running `Command { std: "docker" "start" "-a" "c0b0a3e4ea1b2698a059695b7df5923d249b6a8316af3e13935eedf63940f4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0b0a3e4ea1b2698a059695b7df5923d249b6a8316af3e13935eedf63940f4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0b0a3e4ea1b2698a059695b7df5923d249b6a8316af3e13935eedf63940f4f9", kill_on_drop: false }`
[INFO] [stdout] c0b0a3e4ea1b2698a059695b7df5923d249b6a8316af3e13935eedf63940f4f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 7b9ff022bee5aa15b07358c24059ba50d1d03ceba59a0515fbb1b3582cb12f2d
[INFO] running `Command { std: "docker" "start" "-a" "7b9ff022bee5aa15b07358c24059ba50d1d03ceba59a0515fbb1b3582cb12f2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling async-process v1.2.0
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-std v1.9.0
[INFO] [stderr]    Compiling asking v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.68s
[INFO] running `Command { std: "docker" "inspect" "7b9ff022bee5aa15b07358c24059ba50d1d03ceba59a0515fbb1b3582cb12f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9ff022bee5aa15b07358c24059ba50d1d03ceba59a0515fbb1b3582cb12f2d", kill_on_drop: false }`
[INFO] [stdout] 7b9ff022bee5aa15b07358c24059ba50d1d03ceba59a0515fbb1b3582cb12f2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 381d8d7f965a22f1dde1f33ee8f89ced17b792ec3017add63df709e53fbe9cfc
[INFO] running `Command { std: "docker" "start" "-a" "381d8d7f965a22f1dde1f33ee8f89ced17b792ec3017add63df709e53fbe9cfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling simple-mutex v1.1.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling async-dup v1.2.2
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling predicates-tree v1.0.3
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling predicates v2.0.1
[INFO] [stderr]    Compiling assert_cmd v2.0.0
[INFO] [stderr]    Compiling asking v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `asking`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name constrain --edition=2018 examples/constrain.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=559616cb5af340f6 -C extra-filename=-559616cb5af340f6 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern asking=/opt/rustwide/target/debug/deps/libasking-f00664528fdb2f15.rlib --extern assert_cmd=/opt/rustwide/target/debug/deps/libassert_cmd-733797e3ea02292d.rlib --extern async_dup=/opt/rustwide/target/debug/deps/libasync_dup-7295133cf5a420fe.rlib --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-491d2f9aecda885e.rlib --extern chrono=/opt/rustwide/target/debug/deps/libchrono-91da156a25ed997c.rlib --extern doc_comment=/opt/rustwide/target/debug/deps/libdoc_comment-04fe685c62158979.rlib --extern eyre=/opt/rustwide/target/debug/deps/libeyre-7086bd373af2e9a0.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-0c2d5b60afc6ed49.rlib --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-789674eb24a91499.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "381d8d7f965a22f1dde1f33ee8f89ced17b792ec3017add63df709e53fbe9cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381d8d7f965a22f1dde1f33ee8f89ced17b792ec3017add63df709e53fbe9cfc", kill_on_drop: false }`
[INFO] [stdout] 381d8d7f965a22f1dde1f33ee8f89ced17b792ec3017add63df709e53fbe9cfc