[INFO] fetching crate elba 0.3.0...
[INFO] testing elba-0.3.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237
[INFO] extracting crate elba 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate elba 0.3.0
[INFO] finished tweaking crates.io crate elba 0.3.0
[INFO] tweaked toml for crates.io crate elba 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate elba 0.3.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 342 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.47)
[INFO] [stderr]       Adding config v0.9.3 (available: v0.15.15)
[INFO] [stderr]       Adding console v0.6.2 (available: v0.16.1)
[INFO] [stderr]       Adding crossbeam v0.4.1 (available: v0.8.4)
[INFO] [stderr]       Adding digest v0.7.6 (available: v0.10.7)
[INFO] [stderr]       Adding directories v1.0.2 (available: v6.0.0)
[INFO] [stderr]       Adding git2 v0.7.5 (available: v0.20.2)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.11.1)
[INFO] [stderr]       Adding itertools v0.7.11 (available: v0.14.0)
[INFO] [stderr]       Adding miow v0.3.7 (available: v0.6.1)
[INFO] [stderr]       Adding nom v4.2.3 (available: v8.0.0)
[INFO] [stderr]       Adding petgraph v0.4.13 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.5.6 (available: v0.9.2)
[INFO] [stderr]       Adding reqwest v0.9.24 (available: v0.12.23)
[INFO] [stderr]       Adding semver v0.9.0 (available: v1.0.26)
[INFO] [stderr]       Adding sha2 v0.7.1 (available: v0.10.9)
[INFO] [stderr]       Adding simsearch v0.1.4 (available: v0.3.0)
[INFO] [stderr]       Adding textwrap v0.10.0 (available: v0.16.2)
[INFO] [stderr]       Adding toml v0.4.10 (available: v0.9.5)
[INFO] [stderr]       Adding toml_edit v0.1.5 (available: v0.23.4)
[INFO] [stderr]       Adding url v1.7.2 (available: v2.5.7)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a81ef951f8f43b42b565b52b8a54c30e37586569dcf737db3d640c29e53bf45c
[INFO] running `Command { std: "docker" "start" "-a" "a81ef951f8f43b42b565b52b8a54c30e37586569dcf737db3d640c29e53bf45c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a81ef951f8f43b42b565b52b8a54c30e37586569dcf737db3d640c29e53bf45c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81ef951f8f43b42b565b52b8a54c30e37586569dcf737db3d640c29e53bf45c", kill_on_drop: false }`
[INFO] [stdout] a81ef951f8f43b42b565b52b8a54c30e37586569dcf737db3d640c29e53bf45c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02094632dd2e2a772a907fb99dafb63d5c301aa402f8a71abe7dc6652b51c659
[INFO] running `Command { std: "docker" "start" "-a" "02094632dd2e2a772a907fb99dafb63d5c301aa402f8a71abe7dc6652b51c659", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling memchr v2.7.5
[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 openssl-sys v0.9.109
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.18
[INFO] [stderr]    Compiling libz-sys v1.1.22
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[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/d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.106/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=3453d6efb811e620 -C extra-filename=-d39b452e62eda284 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-a28683de7e2d991e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-084ae52e87cd4d87.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-b4c15d9166d0a657.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" "02094632dd2e2a772a907fb99dafb63d5c301aa402f8a71abe7dc6652b51c659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02094632dd2e2a772a907fb99dafb63d5c301aa402f8a71abe7dc6652b51c659", kill_on_drop: false }`
[INFO] [stdout] 02094632dd2e2a772a907fb99dafb63d5c301aa402f8a71abe7dc6652b51c659