[INFO] fetching crate postform_rtt 0.5.0...
[INFO] checking postform_rtt-0.5.0 against master#7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e for pr-102091
[INFO] extracting crate postform_rtt 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate postform_rtt 0.5.0 on toolchain 7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate postform_rtt 0.5.0
[INFO] finished tweaking crates.io crate postform_rtt 0.5.0
[INFO] tweaked toml for crates.io crate postform_rtt 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate postform_rtt 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusb v0.8.1
[INFO] [stderr]   Downloaded gloo-timers v0.2.3
[INFO] [stderr]   Downloaded async-global-executor v2.0.3
[INFO] [stderr]   Downloaded ctrlc v3.2.1
[INFO] [stderr]   Downloaded probe-rs-rtt v0.11.0
[INFO] [stderr]   Downloaded hidapi v1.3.4
[INFO] [stderr]   Downloaded jep106 v0.2.6
[INFO] [stderr]   Downloaded rcobs v0.1.1
[INFO] [stderr]   Downloaded async-std v1.11.0
[INFO] [stderr]   Downloaded async-task v4.2.0
[INFO] [stderr]   Downloaded bindgen v0.57.0
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.8
[INFO] [stderr]   Downloaded eyre v0.6.7
[INFO] [stderr]   Downloaded gdb-server v0.11.0
[INFO] [stderr]   Downloaded gdb-protocol v0.1.0
[INFO] [stderr]   Downloaded probe-rs v0.11.0
[INFO] [stderr]   Downloaded wasmparser v0.57.0
[INFO] [stderr]   Downloaded scroll v0.10.2
[INFO] [stderr]   Downloaded postform_decoder v0.5.0
[INFO] [stderr]   Downloaded ihex v3.0.0
[INFO] [stderr]   Downloaded jaylink v0.2.0
[INFO] [stderr]   Downloaded probe-rs-target v0.11.0
[INFO] [stderr]   Downloaded svg v0.9.3
[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@sha256:06bd2dc561ac9b9120e7d8112cca06cd3b1bded0ddb8515a4f6a39439d56c944" "/opt/rustwide/cargo-home/bin/cargo" "+7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96f8f0f49a53ec4aaaaedc44853c84a043697e177cc33aa36d0bd4f70d19eaa5
[INFO] running `Command { std: "docker" "start" "-a" "96f8f0f49a53ec4aaaaedc44853c84a043697e177cc33aa36d0bd4f70d19eaa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96f8f0f49a53ec4aaaaedc44853c84a043697e177cc33aa36d0bd4f70d19eaa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f8f0f49a53ec4aaaaedc44853c84a043697e177cc33aa36d0bd4f70d19eaa5", kill_on_drop: false }`
[INFO] [stdout] 96f8f0f49a53ec4aaaaedc44853c84a043697e177cc33aa36d0bd4f70d19eaa5
[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=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@sha256:06bd2dc561ac9b9120e7d8112cca06cd3b1bded0ddb8515a4f6a39439d56c944" "/opt/rustwide/cargo-home/bin/cargo" "+7a8636c843bd24038fe1d1f69b4a8e4b0ea55d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 979f8576a9edd27f13195825b40b14bc18508fcb18d0c183fcbf63f16bd9bbb3
[INFO] running `Command { std: "docker" "start" "-a" "979f8576a9edd27f13195825b40b14bc18508fcb18d0c183fcbf63f16bd9bbb3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]     Checking event-listener v2.5.2
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling clang-sys v1.3.1
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling rusb v0.8.1
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling libusb1-sys v0.5.0
[INFO] [stderr]    Compiling hidapi v1.3.4
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking async-task v4.2.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]     Checking bitvec v0.19.6
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking blocking v1.2.0
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]    Compiling eyre v0.6.7
[INFO] [stderr]     Checking svg v0.9.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking thousands v0.2.0
[INFO] [stderr]     Checking ihex v3.0.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling field-offset v0.3.4
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking wasmparser v0.57.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking gdb-protocol v0.1.0
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking rcobs v0.1.1
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking object v0.22.0
[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-1.0.89/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=b06bf8f838c9dd4f -C extra-filename=-b06bf8f838c9dd4f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d937f1f82ffb437d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-57c1be8c4f14b3a1.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.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" "979f8576a9edd27f13195825b40b14bc18508fcb18d0c183fcbf63f16bd9bbb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "979f8576a9edd27f13195825b40b14bc18508fcb18d0c183fcbf63f16bd9bbb3", kill_on_drop: false }`
[INFO] [stdout] 979f8576a9edd27f13195825b40b14bc18508fcb18d0c183fcbf63f16bd9bbb3