[INFO] cloning repository https://github.com/t-xinlin/ilearning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t-xinlin/ilearning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4f093499ab25d89d02383ba6ff1c92325624214
[INFO] checking t-xinlin/ilearning-rust against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/t-xinlin/ilearning-rust on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/t-xinlin/ilearning-rust
[INFO] finished tweaking git repo https://github.com/t-xinlin/ilearning-rust
[INFO] tweaked toml for git repo https://github.com/t-xinlin/ilearning-rust written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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 ctor v0.1.21
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded object v0.26.2
[INFO] [stderr]   Downloaded urlencoding v1.3.3
[INFO] [stderr]   Downloaded bumpalo v3.7.1
[INFO] [stderr]   Downloaded sqlx-macros v0.5.7
[INFO] [stderr]   Downloaded rsa v0.4.1
[INFO] [stderr]   Downloaded cron v0.6.1
[INFO] [stderr]   Downloaded crc-catalog v1.1.1
[INFO] [stderr]   Downloaded futures-intrusive v0.4.0
[INFO] [stderr]   Downloaded num-bigint v0.4.2
[INFO] [stderr]   Downloaded zstd-safe v3.1.0+zstd.1.4.9
[INFO] [stderr]   Downloaded simple_asn1 v0.5.4
[INFO] [stderr]   Downloaded firestorm v0.4.6
[INFO] [stderr]   Downloaded url-escape v0.1.0
[INFO] [stderr]   Downloaded crc v2.0.0
[INFO] [stderr]   Downloaded sqlx-core v0.5.7
[INFO] [stderr]   Downloaded paw-attributes v1.0.2
[INFO] [stderr]   Downloaded flate2 v1.0.22
[INFO] [stderr]   Downloaded http v0.2.5
[INFO] [stderr]   Downloaded zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]   Downloaded url_encoded_data v0.6.1
[INFO] [stderr]   Downloaded iso8601 v0.1.1
[INFO] [stderr]   Downloaded crypto v0.2.0
[INFO] [stderr]   Downloaded pad v0.1.6
[INFO] [stderr]   Downloaded datetime v0.4.7
[INFO] [stderr]   Downloaded actix-web v4.0.0-beta.9
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded html-escape v0.2.9
[INFO] [stderr]   Downloaded whoami v1.1.3
[INFO] [stderr]   Downloaded zstd v0.7.0+zstd.1.4.9
[INFO] [stderr]   Downloaded actix-macros v0.2.1
[INFO] [stderr]   Downloaded cookie v0.15.1
[INFO] [stderr]   Downloaded num-bigint v0.3.3
[INFO] [stderr]   Downloaded tracing v0.1.28
[INFO] [stderr]   Downloaded serde_yaml v0.8.21
[INFO] [stderr]   Downloaded zeroize_derive v1.2.0
[INFO] [stderr]   Downloaded locale v0.2.2
[INFO] [stderr]   Downloaded tokio v1.12.0
[INFO] [stderr]   Downloaded sqlformat v0.1.8
[INFO] [stderr]   Downloaded sqlx-rt v0.5.7
[INFO] [stderr]   Downloaded actix-http v3.0.0-beta.10
[INFO] [stderr]   Downloaded sqlx v0.5.7
[INFO] [stderr]   Downloaded paw-raw v1.0.0
[INFO] [stderr]   Downloaded paw v1.0.0
[INFO] [stderr]   Downloaded actix-router v0.5.0-beta.2
[INFO] [stderr]   Downloaded actix-web-codegen v0.5.0-beta.4
[INFO] [stderr]   Downloaded language-tags v0.3.2
[INFO] [stderr]   Downloaded cron v0.9.0
[INFO] [stderr]   Downloaded cron v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36205f33b8262bac6f6bf232328abcbcc0cf25973c8775d2dafe47b8ed6538da
[INFO] running `Command { std: "docker" "start" "-a" "36205f33b8262bac6f6bf232328abcbcc0cf25973c8775d2dafe47b8ed6538da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36205f33b8262bac6f6bf232328abcbcc0cf25973c8775d2dafe47b8ed6538da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36205f33b8262bac6f6bf232328abcbcc0cf25973c8775d2dafe47b8ed6538da", kill_on_drop: false }`
[INFO] [stdout] 36205f33b8262bac6f6bf232328abcbcc0cf25973c8775d2dafe47b8ed6538da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7eea2b81b7909d15e85ac59477c750c6be8bf96ab0bd22ad152c2caa27f11d3
[INFO] running `Command { std: "docker" "start" "-a" "b7eea2b81b7909d15e85ac59477c750c6be8bf96ab0bd22ad152c2caa27f11d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]     Checking local-waker v0.1.1
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling zstd-safe v3.1.0+zstd.1.4.9
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling whoami v1.1.3
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling minimal-lexical v0.1.3
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling firestorm v0.4.6
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr] error: could not compile `proc-macro2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.29/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="nightly"' --cfg 'feature="proc-macro"' -C metadata=374dd8ba55a08587 -C extra-filename=-374dd8ba55a08587 --out-dir /opt/rustwide/target/debug/build/proc-macro2-374dd8ba55a08587 -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" "b7eea2b81b7909d15e85ac59477c750c6be8bf96ab0bd22ad152c2caa27f11d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7eea2b81b7909d15e85ac59477c750c6be8bf96ab0bd22ad152c2caa27f11d3", kill_on_drop: false }`
[INFO] [stdout] b7eea2b81b7909d15e85ac59477c750c6be8bf96ab0bd22ad152c2caa27f11d3