[INFO] cloning repository https://github.com/Lowkeychat/libsignal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lowkeychat/libsignal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowkeychat%2Flibsignal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowkeychat%2Flibsignal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b7f3173cc4431bc4c6e55f6182a37229b2db6fd
[INFO] checking Lowkeychat/libsignal against try#c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6 for pr-145463
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowkeychat%2Flibsignal" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Lowkeychat/libsignal
[INFO] finished tweaking git repo https://github.com/Lowkeychat/libsignal
[INFO] tweaked toml for git repo https://github.com/Lowkeychat/libsignal written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lowkeychat/libsignal on toolchain c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Lowkeychat/libsignal 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" "+c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git submodule `https://github.com/google/boringssl.git`
[INFO] [stderr]     Updating git submodule `https://github.com/google/boringssl.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-modes v0.8.1
[INFO] [stderr]   Downloaded pqcrypto-traits v0.3.4
[INFO] [stderr]   Downloaded asn1_derive v0.9.1
[INFO] [stderr]   Downloaded unzip3 v1.0.0
[INFO] [stderr]   Downloaded derive-where v1.2.1
[INFO] [stderr]   Downloaded asn1 v0.9.1
[INFO] [stderr]   Downloaded proptest v1.2.0
[INFO] [stderr]   Downloaded syn v2.0.17
[INFO] [stderr]   Downloaded bindgen v0.62.0
[INFO] [stderr]   Downloaded hkdf v0.11.0
[INFO] [stderr]   Downloaded mp4san v0.3.1
[INFO] [stderr]   Downloaded linkme-impl v0.3.9
[INFO] [stderr]   Downloaded linkme v0.3.9
[INFO] [stderr]   Downloaded pqcrypto-kyber v0.7.6
[INFO] [stderr]   Downloaded pqcrypto-internals v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07dbe67fea97f0fb70300506c3e547d79c40837c43cdd75ab204d34c2813e6b8
[INFO] running `Command { std: "docker" "start" "-a" "07dbe67fea97f0fb70300506c3e547d79c40837c43cdd75ab204d34c2813e6b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07dbe67fea97f0fb70300506c3e547d79c40837c43cdd75ab204d34c2813e6b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07dbe67fea97f0fb70300506c3e547d79c40837c43cdd75ab204d34c2813e6b8", kill_on_drop: false }`
[INFO] [stdout] 07dbe67fea97f0fb70300506c3e547d79c40837c43cdd75ab204d34c2813e6b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+c6f1a85c8f06c93ddc6200caf413929a2e7e7dd6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba2f85cce80176d02ffc9f5467ae3e61edaf79f249b7a086542ad85f7895af89
[INFO] running `Command { std: "docker" "start" "-a" "ba2f85cce80176d02ffc9f5467ae3e61edaf79f249b7a086542ad85f7895af89", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ba2f85cce80176d02ffc9f5467ae3e61edaf79f249b7a086542ad85f7895af89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba2f85cce80176d02ffc9f5467ae3e61edaf79f249b7a086542ad85f7895af89", kill_on_drop: false }`
[INFO] [stdout] ba2f85cce80176d02ffc9f5467ae3e61edaf79f249b7a086542ad85f7895af89