[INFO] cloning repository https://github.com/Tommyd27/Skimpy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tommyd27/Skimpy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTommyd27%2FSkimpy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTommyd27%2FSkimpy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4dac7f28d7a33e62595b18efa2dbfe2998253b15
[INFO] checking Tommyd27/Skimpy against try#b8ee37b59c6e1f39bae18b85e057975ab0d89308 for pr-139587-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTommyd27%2FSkimpy" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tommyd27/Skimpy on toolchain b8ee37b59c6e1f39bae18b85e057975ab0d89308
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tommyd27/Skimpy
[INFO] finished tweaking git repo https://github.com/Tommyd27/Skimpy
[INFO] tweaked toml for git repo https://github.com/Tommyd27/Skimpy written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Tommyd27/Skimpy 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" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "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 shuttle-runtime v0.17.0
[INFO] [stderr]   Downloaded opentelemetry-otlp v0.11.0
[INFO] [stderr]   Downloaded shuttle-service v0.17.0
[INFO] [stderr]   Downloaded opentelemetry-http v0.7.0
[INFO] [stderr]   Downloaded shuttle-secrets v0.17.0
[INFO] [stderr]   Downloaded shuttle-common v0.17.0
[INFO] [stderr]   Downloaded shuttle-codegen v0.17.0
[INFO] [stderr]   Downloaded shuttle-proto v0.17.0
[INFO] [stderr]   Downloaded tracing-opentelemetry v0.18.0
[INFO] [stderr]   Downloaded opentelemetry-proto v0.1.0
[INFO] [stderr]   Downloaded shuttle-serenity v0.17.0
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91af0e18f1e87793fb48cea575b7249d90c84c0d003ff16a49e380ee1cd73660
[INFO] running `Command { std: "docker" "start" "-a" "91af0e18f1e87793fb48cea575b7249d90c84c0d003ff16a49e380ee1cd73660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91af0e18f1e87793fb48cea575b7249d90c84c0d003ff16a49e380ee1cd73660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91af0e18f1e87793fb48cea575b7249d90c84c0d003ff16a49e380ee1cd73660", kill_on_drop: false }`
[INFO] [stdout] 91af0e18f1e87793fb48cea575b7249d90c84c0d003ff16a49e380ee1cd73660
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42cb4d2265ac09ff000bd8b12c179c48120406b411b8c8f330a5243c2cf094e1
[INFO] running `Command { std: "docker" "start" "-a" "42cb4d2265ac09ff000bd8b12c179c48120406b411b8c8f330a5243c2cf094e1", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]    Compiling anyhow v1.0.71
[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]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking httpdate v1.0.2
[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" "42cb4d2265ac09ff000bd8b12c179c48120406b411b8c8f330a5243c2cf094e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42cb4d2265ac09ff000bd8b12c179c48120406b411b8c8f330a5243c2cf094e1", kill_on_drop: false }`
[INFO] [stdout] 42cb4d2265ac09ff000bd8b12c179c48120406b411b8c8f330a5243c2cf094e1