[INFO] fetching crate path_no_alloc 0.1.2...
[INFO] testing path_no_alloc-0.1.2 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate path_no_alloc 0.1.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate path_no_alloc 0.1.2
[INFO] finished tweaking crates.io crate path_no_alloc 0.1.2
[INFO] tweaked toml for crates.io crate path_no_alloc 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate path_no_alloc 0.1.2 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate path_no_alloc 0.1.2 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8655665b1306d7187ea0ef6d9a7ff1e97b0018b6566bc3a715ec46b647ba0db5
[INFO] running `Command { std: "docker" "start" "-a" "8655665b1306d7187ea0ef6d9a7ff1e97b0018b6566bc3a715ec46b647ba0db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8655665b1306d7187ea0ef6d9a7ff1e97b0018b6566bc3a715ec46b647ba0db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8655665b1306d7187ea0ef6d9a7ff1e97b0018b6566bc3a715ec46b647ba0db5", kill_on_drop: false }`
[INFO] [stdout] 8655665b1306d7187ea0ef6d9a7ff1e97b0018b6566bc3a715ec46b647ba0db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26bcabc63a961bcb00cf411d1644d8e82fdad6dd30eb687c73e072d03b010daf
[INFO] running `Command { std: "docker" "start" "-a" "26bcabc63a961bcb00cf411d1644d8e82fdad6dd30eb687c73e072d03b010daf", kill_on_drop: false }`
[INFO] [stderr]    Compiling path_no_alloc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "26bcabc63a961bcb00cf411d1644d8e82fdad6dd30eb687c73e072d03b010daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26bcabc63a961bcb00cf411d1644d8e82fdad6dd30eb687c73e072d03b010daf", kill_on_drop: false }`
[INFO] [stdout] 26bcabc63a961bcb00cf411d1644d8e82fdad6dd30eb687c73e072d03b010daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84f7a29c1f2e7d4dcbf9d28bacaf40620951aeed435fc762e442ba2a4c19d162
[INFO] running `Command { std: "docker" "start" "-a" "84f7a29c1f2e7d4dcbf9d28bacaf40620951aeed435fc762e442ba2a4c19d162", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling plotters-backend v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 plotters-svg v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[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" "84f7a29c1f2e7d4dcbf9d28bacaf40620951aeed435fc762e442ba2a4c19d162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f7a29c1f2e7d4dcbf9d28bacaf40620951aeed435fc762e442ba2a4c19d162", kill_on_drop: false }`
[INFO] [stdout] 84f7a29c1f2e7d4dcbf9d28bacaf40620951aeed435fc762e442ba2a4c19d162