[INFO] cloning repository https://github.com/mubaraqwahab/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mubaraqwahab/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmubaraqwahab%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmubaraqwahab%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0fc70ddc9a67d608207286bbc3a7b2f8e8b7f2b
[INFO] testing mubaraqwahab/learn_rust/d0fc70ddc9a67d608207286bbc3a7b2f8e8b7f2b against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmubaraqwahab%2Flearn_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mubaraqwahab/learn_rust
[INFO] finished tweaking git repo https://github.com/mubaraqwahab/learn_rust
[INFO] tweaked toml for git repo https://github.com/mubaraqwahab/learn_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mubaraqwahab/learn_rust on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mubaraqwahab/learn_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates v3.1.2
[INFO] [stderr]   Downloaded assert_fs v1.1.2
[INFO] [stderr]   Downloaded clap_lex v0.7.3
[INFO] [stderr]   Downloaded predicates-core v1.0.8
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.6
[INFO] [stderr]   Downloaded phf v0.10.1
[INFO] [stderr]   Downloaded tempfile v3.13.0
[INFO] [stderr]   Downloaded string_cache v0.8.7
[INFO] [stderr]   Downloaded globwalk v0.9.1
[INFO] [stderr]   Downloaded phf_codegen v0.10.0
[INFO] [stderr]   Downloaded predicates-tree v1.0.11
[INFO] [stderr]   Downloaded ego-tree v0.6.3
[INFO] [stderr]   Downloaded html5ever v0.27.0
[INFO] [stderr]   Downloaded markup5ever v0.12.1
[INFO] [stderr]   Downloaded selectors v0.25.0
[INFO] [stderr]   Downloaded cssparser v0.31.2
[INFO] [stderr]   Downloaded clap_builder v4.5.21
[INFO] [stderr]   Downloaded serde v1.0.214
[INFO] [stderr]   Downloaded tendril v0.4.3
[INFO] [stderr]   Downloaded serde_derive v1.0.214
[INFO] [stderr]   Downloaded syn v2.0.85
[INFO] [stderr]   Downloaded ignore v0.4.23
[INFO] [stderr]   Downloaded mini-redis v0.4.1
[INFO] [stderr]   Downloaded globset v0.4.15
[INFO] [stderr]   Downloaded servo_arc v0.3.0
[INFO] [stderr]   Downloaded scraper v0.20.0
[INFO] [stderr]   Downloaded assert_cmd v2.0.16
[INFO] [stderr]   Downloaded phf_codegen v0.11.2
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.2
[INFO] [stderr]   Downloaded rustls v0.23.16
[INFO] [stderr]   Downloaded bstr v1.11.0
[INFO] [stderr]   Downloaded dtoa v1.0.9
[INFO] [stderr]   Downloaded dtoa-short v0.3.5
[INFO] [stderr]   Downloaded futf v0.1.5
[INFO] [stderr]   Downloaded rustix v0.38.38
[INFO] [stderr]   Downloaded trpl v0.2.0
[INFO] [stderr]   Downloaded cssparser-macros v0.6.1
[INFO] [stderr]   Downloaded phf_generator v0.10.0
[INFO] [stderr]   Downloaded phf_shared v0.10.0
[INFO] [stderr]   Downloaded atoi v0.3.3
[INFO] [stderr]   Downloaded matchers v0.0.1
[INFO] [stderr]   Downloaded clap v4.5.21
[INFO] [stderr]   Downloaded tokio v1.41.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a34a0bddfcce4a2ff34f999ae9e12e5e9d090b4b844700025443c43c671aaaa2
[INFO] running `Command { std: "docker" "start" "-a" "a34a0bddfcce4a2ff34f999ae9e12e5e9d090b4b844700025443c43c671aaaa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a34a0bddfcce4a2ff34f999ae9e12e5e9d090b4b844700025443c43c671aaaa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34a0bddfcce4a2ff34f999ae9e12e5e9d090b4b844700025443c43c671aaaa2", kill_on_drop: false }`
[INFO] [stdout] a34a0bddfcce4a2ff34f999ae9e12e5e9d090b4b844700025443c43c671aaaa2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ac214d86f2970f17048f04b9fdf480b0d3b017ebddb1ceb07c43935f30ff6ae
[INFO] running `Command { std: "docker" "start" "-a" "8ac214d86f2970f17048f04b9fdf480b0d3b017ebddb1ceb07c43935f30ff6ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling bytes v1.8.0
[INFO] [stderr]    Compiling serde v1.0.214
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling cc v1.1.31
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]    Compiling hashbrown v0.15.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling tinyvec v1.8.0
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling dtoa v1.0.9
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling indexmap v2.6.0
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling unicode-bidi v0.3.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling servo_arc v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling rustls-pki-types v1.10.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling clap_lex v0.7.3
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling clap_builder v4.5.21
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling rustls-pemfile v2.2.0
[INFO] [stderr]    Compiling url v2.5.2
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling tracing-log v0.1.4
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling sync_wrapper v1.0.1
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[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/d98a5da813da67eb189387b8ccfb73cf481275d8/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.85/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-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=c102812c33ce40e1 -C extra-filename=-1f36aa8a261e1d25 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-898c36b0c7023ab7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c5f4aebd6affaa64.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-46eb47d49fe72184.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8ac214d86f2970f17048f04b9fdf480b0d3b017ebddb1ceb07c43935f30ff6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac214d86f2970f17048f04b9fdf480b0d3b017ebddb1ceb07c43935f30ff6ae", kill_on_drop: false }`
[INFO] [stdout] 8ac214d86f2970f17048f04b9fdf480b0d3b017ebddb1ceb07c43935f30ff6ae