[INFO] cloning repository https://github.com/Oswaldosalazaruk/rust.polar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Oswaldosalazaruk/rust.polar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOswaldosalazaruk%2Frust.polar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOswaldosalazaruk%2Frust.polar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 892023d41fb61a94e9ce87411df3a231c9355300
[INFO] testing Oswaldosalazaruk/rust.polar against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628-retry-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOswaldosalazaruk%2Frust.polar" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Oswaldosalazaruk/rust.polar
[INFO] finished tweaking git repo https://github.com/Oswaldosalazaruk/rust.polar
[INFO] tweaked toml for git repo https://github.com/Oswaldosalazaruk/rust.polar written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Oswaldosalazaruk/rust.polar on toolchain 160e7623e8cbbf1feab2b6e2a24733a98c7bde9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Oswaldosalazaruk/rust.polar 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" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bb6ab76f02ee5fe6bdad7d67d563e04efdfb834e1f68e4c19ba5cc79bd35474
[INFO] running `Command { std: "docker" "start" "-a" "6bb6ab76f02ee5fe6bdad7d67d563e04efdfb834e1f68e4c19ba5cc79bd35474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bb6ab76f02ee5fe6bdad7d67d563e04efdfb834e1f68e4c19ba5cc79bd35474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb6ab76f02ee5fe6bdad7d67d563e04efdfb834e1f68e4c19ba5cc79bd35474", kill_on_drop: false }`
[INFO] [stdout] 6bb6ab76f02ee5fe6bdad7d67d563e04efdfb834e1f68e4c19ba5cc79bd35474
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b1eaa33d685322df3b904ff33305f41fd88d4df95e6e2cc521a1b3fbdd4e65c
[INFO] running `Command { std: "docker" "start" "-a" "4b1eaa33d685322df3b904ff33305f41fd88d4df95e6e2cc521a1b3fbdd4e65c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling lexical-util v0.8.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling lexical-write-integer v0.8.5
[INFO] [stderr]    Compiling lexical-parse-integer v0.8.6
[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" "4b1eaa33d685322df3b904ff33305f41fd88d4df95e6e2cc521a1b3fbdd4e65c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b1eaa33d685322df3b904ff33305f41fd88d4df95e6e2cc521a1b3fbdd4e65c", kill_on_drop: false }`
[INFO] [stdout] 4b1eaa33d685322df3b904ff33305f41fd88d4df95e6e2cc521a1b3fbdd4e65c