[INFO] fetching crate massbit-sol 0.1.3...
[INFO] testing massbit-sol-0.1.3 against master#159ba8a92c9e2fa4121f106176309521f4af87e9+rustflags=-Copt-level=3 for pr-107051
[INFO] extracting crate massbit-sol 0.1.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate massbit-sol 0.1.3 on toolchain 159ba8a92c9e2fa4121f106176309521f4af87e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate massbit-sol 0.1.3
[INFO] finished tweaking crates.io crate massbit-sol 0.1.3
[INFO] tweaked toml for crates.io crate massbit-sol 0.1.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate massbit-sol 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trust-dns-resolver v0.20.3
[INFO] [stderr]   Downloaded futures-io v0.3.18
[INFO] [stderr]   Downloaded futures-core v0.3.18
[INFO] [stderr]   Downloaded futures-channel v0.3.18
[INFO] [stderr]   Downloaded futures-sink v0.3.18
[INFO] [stderr]   Downloaded async-trait v0.1.51
[INFO] [stderr]   Downloaded hyper v0.14.15
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded nickel v0.11.0
[INFO] [stderr]   Downloaded tiny_http v0.6.4
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded iron v0.6.1
[INFO] [stderr]   Downloaded minifier v0.0.41
[INFO] [stderr]   Downloaded handlebars v4.1.5
[INFO] [stderr]   Downloaded reqwest v0.11.7
[INFO] [stderr]   Downloaded openssl-sys v0.9.71
[INFO] [stderr]   Downloaded uriparse v0.6.3
[INFO] [stderr]   Downloaded h2 v0.3.7
[INFO] [stderr]   Downloaded anyhow v1.0.51
[INFO] [stderr]   Downloaded proptest-derive v0.3.0
[INFO] [stderr]   Downloaded futures-task v0.3.18
[INFO] [stderr]   Downloaded futures-util v0.3.18
[INFO] [stderr]   Downloaded tokio v1.14.0
[INFO] [stderr]   Downloaded encoding_rs v0.8.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66b3f4e81405156b3eceaa0c0157848bf901012e68779d52955f3cb483f5d0f6
[INFO] running `Command { std: "docker" "start" "-a" "66b3f4e81405156b3eceaa0c0157848bf901012e68779d52955f3cb483f5d0f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66b3f4e81405156b3eceaa0c0157848bf901012e68779d52955f3cb483f5d0f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b3f4e81405156b3eceaa0c0157848bf901012e68779d52955f3cb483f5d0f6", kill_on_drop: false }`
[INFO] [stdout] 66b3f4e81405156b3eceaa0c0157848bf901012e68779d52955f3cb483f5d0f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f1c0bf4619ddf991ec0f9df26142929b9e021dba64bc3b93bb2bb4d7a04acaf
[INFO] running `Command { std: "docker" "start" "-a" "2f1c0bf4619ddf991ec0f9df26142929b9e021dba64bc3b93bb2bb4d7a04acaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling futures-io v0.3.18
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling http v0.2.5
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling futures-sink v0.3.18
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling tokio-util v0.6.9
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.82/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --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"' --cfg 'feature="visit-mut"' -C metadata=1ec0566a5b782479 -C extra-filename=-1ec0566a5b782479 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9dbaaf035d6d15d1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0bcba2a61b67309f.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2f1c0bf4619ddf991ec0f9df26142929b9e021dba64bc3b93bb2bb4d7a04acaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1c0bf4619ddf991ec0f9df26142929b9e021dba64bc3b93bb2bb4d7a04acaf", kill_on_drop: false }`
[INFO] [stdout] 2f1c0bf4619ddf991ec0f9df26142929b9e021dba64bc3b93bb2bb4d7a04acaf