[INFO] cloning repository https://github.com/zkBob/zkbob-cloud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zkBob/zkbob-cloud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkBob%2Fzkbob-cloud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkBob%2Fzkbob-cloud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68b0253732a7e688983306aee054860516012573
[INFO] checking zkBob/zkbob-cloud against try#b047d5f4496a7526d91d0dddea494c05853f2a7b for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkBob%2Fzkbob-cloud" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zkBob/zkbob-cloud
[INFO] finished tweaking git repo https://github.com/zkBob/zkbob-cloud
[INFO] tweaked toml for git repo https://github.com/zkBob/zkbob-cloud written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zkBob/zkbob-cloud on toolchain b047d5f4496a7526d91d0dddea494c05853f2a7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zkBob/zkbob-cloud 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" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aede689ed5a6ab513ce2c490919c07b35e1910fa6518713e386d5c4b3526b97
[INFO] running `Command { std: "docker" "start" "-a" "6aede689ed5a6ab513ce2c490919c07b35e1910fa6518713e386d5c4b3526b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aede689ed5a6ab513ce2c490919c07b35e1910fa6518713e386d5c4b3526b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aede689ed5a6ab513ce2c490919c07b35e1910fa6518713e386d5c4b3526b97", kill_on_drop: false }`
[INFO] [stdout] 6aede689ed5a6ab513ce2c490919c07b35e1910fa6518713e386d5c4b3526b97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee5fcda27f35dc4c9018b402b6a2d665c18f57768dc6f7d80a654fe2dc47e766
[INFO] running `Command { std: "docker" "start" "-a" "ee5fcda27f35dc4c9018b402b6a2d665c18f57768dc6f7d80a654fe2dc47e766", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.156
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]     Checking futures-io v0.3.27
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/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]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking ryu v1.0.13
[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" "ee5fcda27f35dc4c9018b402b6a2d665c18f57768dc6f7d80a654fe2dc47e766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5fcda27f35dc4c9018b402b6a2d665c18f57768dc6f7d80a654fe2dc47e766", kill_on_drop: false }`
[INFO] [stdout] ee5fcda27f35dc4c9018b402b6a2d665c18f57768dc6f7d80a654fe2dc47e766