[INFO] fetching crate libmaj 0.1.6...
[INFO] testing libmaj-0.1.6 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate libmaj 0.1.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate libmaj 0.1.6
[INFO] finished tweaking crates.io crate libmaj 0.1.6
[INFO] tweaked toml for crates.io crate libmaj 0.1.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libmaj 0.1.6 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 253 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.10.1 (available: v0.22.1)
[INFO] [stderr]       Adding dirs v1.0.5 (available: v6.0.0)
[INFO] [stderr]       Adding nom v3.2.1 (available: v8.0.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding ring v0.16.20 (available: v0.17.14)
[INFO] [stderr]       Adding semver v0.9.0 (available: v1.0.27)
[INFO] [stderr]       Adding untrusted v0.6.2 (available: v0.9.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] [stderr]       Adding xdg v2.5.2 (available: v3.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f3ed7d1a6bda79bc0f7a978f2f8191f7c19c5c9a42ef7022a20af87b961bb87
[INFO] running `Command { std: "docker" "start" "-a" "1f3ed7d1a6bda79bc0f7a978f2f8191f7c19c5c9a42ef7022a20af87b961bb87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f3ed7d1a6bda79bc0f7a978f2f8191f7c19c5c9a42ef7022a20af87b961bb87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3ed7d1a6bda79bc0f7a978f2f8191f7c19c5c9a42ef7022a20af87b961bb87", kill_on_drop: false }`
[INFO] [stdout] 1f3ed7d1a6bda79bc0f7a978f2f8191f7c19c5c9a42ef7022a20af87b961bb87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9eb25f8b0fb9eb5ba1e27e04755847b0558089adb8b36d259174153d0cc40c5
[INFO] running `Command { std: "docker" "start" "-a" "a9eb25f8b0fb9eb5ba1e27e04755847b0558089adb8b36d259174153d0cc40c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.179
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling simd-adler32 v0.3.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.26
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]    Compiling try_from v0.3.2
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling flate2 v1.1.5
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling untrusted v0.6.2
[INFO] [stderr]    Compiling symlink v0.1.0
[INFO] [stderr]    Compiling xdg v2.5.2
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling addr2line v0.25.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling openssl-sys v0.9.111
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/db823df02fd0c2cf67b43025ac3fef3f2d743245/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.114/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=924499ec0c93f174 -C extra-filename=-c4e637ee218314b7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fce1a70fd2c3744d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e054a971070e2c6a.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9533002ac35f5809.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a9eb25f8b0fb9eb5ba1e27e04755847b0558089adb8b36d259174153d0cc40c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9eb25f8b0fb9eb5ba1e27e04755847b0558089adb8b36d259174153d0cc40c5", kill_on_drop: false }`
[INFO] [stdout] a9eb25f8b0fb9eb5ba1e27e04755847b0558089adb8b36d259174153d0cc40c5