[INFO] fetching crate qatrade-rs 0.4.0...
[INFO] testing qatrade-rs-0.4.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate qatrade-rs 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate qatrade-rs 0.4.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qatrade-rs 0.4.0
[INFO] finished tweaking crates.io crate qatrade-rs 0.4.0
[INFO] tweaked toml for crates.io crate qatrade-rs 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate qatrade-rs 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.7
[INFO] [stderr]   Downloaded derivative v1.0.4
[INFO] [stderr]   Downloaded pin-project v1.0.1
[INFO] [stderr]   Downloaded jobserver v0.1.21
[INFO] [stderr]   Downloaded serde-value v0.6.0
[INFO] [stderr]   Downloaded actix_derive v0.5.0
[INFO] [stderr]   Downloaded actix v0.10.0
[INFO] [stderr]   Downloaded futures-channel v0.3.7
[INFO] [stderr]   Downloaded pest_generator v2.1.3
[INFO] [stderr]   Downloaded pin-project-internal v0.4.27
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded mongodb v0.9.2
[INFO] [stderr]   Downloaded log-mdc v0.1.0
[INFO] [stderr]   Downloaded flate2 v1.0.18
[INFO] [stderr]   Downloaded log4rs v0.12.0
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded derive_more v0.99.11
[INFO] [stderr]   Downloaded actix-macros v0.1.2
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded pin-project v0.4.27
[INFO] [stderr]   Downloaded bson v0.14.1
[INFO] [stderr]   Downloaded lock_api v0.4.1
[INFO] [stderr]   Downloaded futures v0.3.7
[INFO] [stderr]   Downloaded pest_meta v2.1.3
[INFO] [stderr]   Downloaded os_info v1.3.3
[INFO] [stderr]   Downloaded thiserror-impl v1.0.21
[INFO] [stderr]   Downloaded thiserror v1.0.21
[INFO] [stderr]   Downloaded toml v0.5.7
[INFO] [stderr]   Downloaded tokio-codec v0.1.2
[INFO] [stderr]   Downloaded tokio v0.2.22
[INFO] [stderr]   Downloaded futures v0.1.30
[INFO] [stderr]   Downloaded websocket v0.26.2
[INFO] [stderr]   Downloaded md5 v0.6.1
[INFO] [stderr]   Downloaded websocket-base v0.26.2
[INFO] [stderr]   Downloaded amiquip v0.3.3
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded trust-dns-proto v0.19.5
[INFO] [stderr]   Downloaded serde_with_macros v1.2.2
[INFO] [stderr]   Downloaded ordered-float v1.1.0
[INFO] [stderr]   Downloaded web-sys v0.3.45
[INFO] [stderr]   Downloaded qifi-rs v0.3.0
[INFO] [stderr]   Downloaded ring v0.16.15
[INFO] [stderr]   Downloaded serde_yaml v0.8.13
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded async-trait v0.1.41
[INFO] [stderr]   Downloaded futures-executor v0.3.7
[INFO] [stderr]   Downloaded futures-sink v0.3.7
[INFO] [stderr]   Downloaded futures-util v0.3.7
[INFO] [stderr]   Downloaded trust-dns-resolver v0.19.5
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded openssl v0.10.30
[INFO] [stderr]   Downloaded rustls v0.16.0
[INFO] [stderr]   Downloaded resolv-conf v0.6.3
[INFO] [stderr]   Downloaded const_fn v0.4.2
[INFO] [stderr]   Downloaded instant v0.1.8
[INFO] [stderr]   Downloaded serde_with v1.5.1
[INFO] [stderr]   Downloaded gimli v0.22.0
[INFO] [stderr]   Downloaded addr2line v0.13.0
[INFO] [stderr]   Downloaded backtrace v0.3.53
[INFO] [stderr]   Downloaded pin-project-internal v1.0.1
[INFO] [stderr]   Downloaded futures-io v0.3.7
[INFO] [stderr]   Downloaded futures-task v0.3.7
[INFO] [stderr]   Downloaded futures-core v0.3.7
[INFO] [stderr]   Downloaded webpki v0.21.3
[INFO] [stderr]   Downloaded tokio-tls v0.2.1
[INFO] [stderr]   Downloaded object v0.21.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "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] 56b1234c642e679f99b56d75963491c05b4d468a8d54f8bfd8fe1e6c5e67336f
[INFO] running `Command { std: "docker" "start" "-a" "56b1234c642e679f99b56d75963491c05b4d468a8d54f8bfd8fe1e6c5e67336f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56b1234c642e679f99b56d75963491c05b4d468a8d54f8bfd8fe1e6c5e67336f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b1234c642e679f99b56d75963491c05b4d468a8d54f8bfd8fe1e6c5e67336f", kill_on_drop: false }`
[INFO] [stdout] 56b1234c642e679f99b56d75963491c05b4d468a8d54f8bfd8fe1e6c5e67336f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab35f40fe51c4ed118bf113520228c08a73b76922a085a8c7a2e0020b732b24f
[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" "ab35f40fe51c4ed118bf113520228c08a73b76922a085a8c7a2e0020b732b24f", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.7
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling cookie-factory v0.2.4
[INFO] [stderr]    Compiling os_info v1.3.3
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling flate2 v1.0.18
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling actix-macros v0.1.2
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling actix_derive v0.5.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libgit2-sys v0.9.2
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=23ba4a6f6c080a0c -C extra-filename=-23ba4a6f6c080a0c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-18f941bc31ab392e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-8b5ff6b36ede5b66.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-09e70e8bcc039b17.rmeta --cap-lints allow --cap-lints=warn --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path --cfg syn_disable_nightly_tests` (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" "ab35f40fe51c4ed118bf113520228c08a73b76922a085a8c7a2e0020b732b24f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab35f40fe51c4ed118bf113520228c08a73b76922a085a8c7a2e0020b732b24f", kill_on_drop: false }`
[INFO] [stdout] ab35f40fe51c4ed118bf113520228c08a73b76922a085a8c7a2e0020b732b24f