[INFO] fetching crate otter-api-tests 0.7.3...
[INFO] testing otter-api-tests-0.7.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate otter-api-tests 0.7.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate otter-api-tests 0.7.3 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 otter-api-tests 0.7.3
[INFO] finished tweaking crates.io crate otter-api-tests 0.7.3
[INFO] tweaked toml for crates.io crate otter-api-tests 0.7.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate otter-api-tests 0.7.3 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] 5547808e4feeb24493f154bdc32c9980ddb7dd0cfc81c60745de3412b64d6f3f
[INFO] running `Command { std: "docker" "start" "-a" "5547808e4feeb24493f154bdc32c9980ddb7dd0cfc81c60745de3412b64d6f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5547808e4feeb24493f154bdc32c9980ddb7dd0cfc81c60745de3412b64d6f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5547808e4feeb24493f154bdc32c9980ddb7dd0cfc81c60745de3412b64d6f3f", kill_on_drop: false }`
[INFO] [stdout] 5547808e4feeb24493f154bdc32c9980ddb7dd0cfc81c60745de3412b64d6f3f
[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] b772778017fcbcd81afb3d20a135887cc6fc4293d537b41a5fa956adec5baa14
[INFO] running `Command { std: "docker" "start" "-a" "b772778017fcbcd81afb3d20a135887cc6fc4293d537b41a5fa956adec5baa14", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling erased-serde v0.3.16
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling if_chain v1.0.1
[INFO] [stderr]    Compiling thin-slice v0.1.1
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling humansize v1.1.1
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling xmlparser v0.13.3
[INFO] [stderr]    Compiling ego-tree v0.6.2
[INFO] [stderr]    Compiling lazy-init v0.5.0
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling slotmap-fork-otter v1.0.2
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling slug v0.1.4
[INFO] [stderr]    Compiling dtoa-short v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling tendril v0.4.2
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling derive-into-owned v0.1.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling rmp v0.8.10
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling vecdeque-stableix v1.0.0
[INFO] [stderr]    Compiling ordered-float v2.7.0
[INFO] [stderr]    Compiling unic-ucd-segment v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling md-5 v0.9.1
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling unic-segment v0.9.0
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling uds v0.2.6
[INFO] [stderr]    Compiling nix v0.22.0
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling enum-map-derive v0.6.0
[INFO] [stderr]    Compiling typetag-impl v0.1.7
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling extend v1.1.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.7
[INFO] [stderr]    Compiling delegate v0.6.1
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.22.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=55d3b675f4c85942 -C extra-filename=-55d3b675f4c85942 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-dece450273084492.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-0acd51459dcd3de7.rmeta --extern memoffset=/opt/rustwide/target/debug/deps/libmemoffset-cfa241b6ab16dc70.rmeta --cap-lints allow --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" "b772778017fcbcd81afb3d20a135887cc6fc4293d537b41a5fa956adec5baa14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b772778017fcbcd81afb3d20a135887cc6fc4293d537b41a5fa956adec5baa14", kill_on_drop: false }`
[INFO] [stdout] b772778017fcbcd81afb3d20a135887cc6fc4293d537b41a5fa956adec5baa14