[INFO] fetching crate mdblog 0.21.0...
[INFO] testing mdblog-0.21.0 against try#28eff87d300677d3acc4d7129d31c74bf885cf6d for pr-94775
[INFO] extracting crate mdblog 0.21.0 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate mdblog 0.21.0 on toolchain 28eff87d300677d3acc4d7129d31c74bf885cf6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+28eff87d300677d3acc4d7129d31c74bf885cf6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdblog 0.21.0
[INFO] finished tweaking crates.io crate mdblog 0.21.0
[INFO] tweaked toml for crates.io crate mdblog 0.21.0 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate crates.io crate mdblog 0.21.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+28eff87d300677d3acc4d7129d31c74bf885cf6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rocket_http v0.4.10
[INFO] [stderr]   Downloaded rocket v0.4.10
[INFO] [stderr]   Downloaded rocket_codegen v0.4.10
[INFO] [stderr]   Downloaded clap v3.0.6
[INFO] [stderr]   Downloaded rocket_contrib v0.4.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+28eff87d300677d3acc4d7129d31c74bf885cf6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43c8e85d0bf1dd004b21a200b415c52a9e3fa96906749374f4ed872bf22a47a5
[INFO] running `Command { std: "docker" "start" "-a" "43c8e85d0bf1dd004b21a200b415c52a9e3fa96906749374f4ed872bf22a47a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43c8e85d0bf1dd004b21a200b415c52a9e3fa96906749374f4ed872bf22a47a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c8e85d0bf1dd004b21a200b415c52a9e3fa96906749374f4ed872bf22a47a5", kill_on_drop: false }`
[INFO] [stdout] 43c8e85d0bf1dd004b21a200b415c52a9e3fa96906749374f4ed872bf22a47a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+28eff87d300677d3acc4d7129d31c74bf885cf6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 061b801cd5b2fdae86f1642e9735ef0a11c76d190652e77ea9cb2defb28d2eca
[INFO] running `Command { std: "docker" "start" "-a" "061b801cd5b2fdae86f1642e9735ef0a11c76d190652e77ea9cb2defb28d2eca", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling cpuid-bool v0.2.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling state v0.4.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling humansize v1.1.1
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.6.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-0.8.23/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="default"' --cfg 'feature="std"' -C metadata=52db57e462f2ad4b -C extra-filename=-52db57e462f2ad4b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (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" "061b801cd5b2fdae86f1642e9735ef0a11c76d190652e77ea9cb2defb28d2eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "061b801cd5b2fdae86f1642e9735ef0a11c76d190652e77ea9cb2defb28d2eca", kill_on_drop: false }`
[INFO] [stdout] 061b801cd5b2fdae86f1642e9735ef0a11c76d190652e77ea9cb2defb28d2eca