[INFO] fetching crate rainbowdream 1.2.0...
[INFO] testing rainbowdream-1.2.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate rainbowdream 1.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate rainbowdream 1.2.0
[INFO] finished tweaking crates.io crate rainbowdream 1.2.0
[INFO] tweaked toml for crates.io crate rainbowdream 1.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rainbowdream 1.2.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rainbowdream 1.2.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded steamlocate v2.0.0-beta.2
[INFO] [stderr]   Downloaded test-log-macros v0.2.14
[INFO] [stderr]   Downloaded keyvalues-serde v0.2.1
[INFO] [stderr]   Downloaded test-log v0.2.14
[INFO] [stderr]   Downloaded gingerlib v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5555f20b63c71e363810c2dea25862f7183c6cd53bba6028dd350736c5b8d1f
[INFO] running `Command { std: "docker" "start" "-a" "e5555f20b63c71e363810c2dea25862f7183c6cd53bba6028dd350736c5b8d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5555f20b63c71e363810c2dea25862f7183c6cd53bba6028dd350736c5b8d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5555f20b63c71e363810c2dea25862f7183c6cd53bba6028dd350736c5b8d1f", kill_on_drop: false }`
[INFO] [stdout] e5555f20b63c71e363810c2dea25862f7183c6cd53bba6028dd350736c5b8d1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9dc1302b84def1034350ecdc5810cf561797737e46ebcc8376ae6f1cc122012
[INFO] running `Command { std: "docker" "start" "-a" "e9dc1302b84def1034350ecdc5810cf561797737e46ebcc8376ae6f1cc122012", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `regex-syntax v0.8.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `regex-syntax v0.8.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regex-syntax-0.8.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "e9dc1302b84def1034350ecdc5810cf561797737e46ebcc8376ae6f1cc122012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9dc1302b84def1034350ecdc5810cf561797737e46ebcc8376ae6f1cc122012", kill_on_drop: false }`
[INFO] [stdout] e9dc1302b84def1034350ecdc5810cf561797737e46ebcc8376ae6f1cc122012