[INFO] fetching crate possiblyrandom 0.2.0...
[INFO] testing possiblyrandom-0.2.0 against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628
[INFO] extracting crate possiblyrandom 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate possiblyrandom 0.2.0
[INFO] finished tweaking crates.io crate possiblyrandom 0.2.0
[INFO] tweaked toml for crates.io crate possiblyrandom 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate possiblyrandom 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "generate-lockfile" "--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]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding getrandom v0.2.16 (available: v0.3.3)
[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
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b90de1b87c8b52f5ad58101e75c3bf31ace26b9fef9716d08a4efbbaafe7292f
[INFO] running `Command { std: "docker" "start" "-a" "b90de1b87c8b52f5ad58101e75c3bf31ace26b9fef9716d08a4efbbaafe7292f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b90de1b87c8b52f5ad58101e75c3bf31ace26b9fef9716d08a4efbbaafe7292f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b90de1b87c8b52f5ad58101e75c3bf31ace26b9fef9716d08a4efbbaafe7292f", kill_on_drop: false }`
[INFO] [stdout] b90de1b87c8b52f5ad58101e75c3bf31ace26b9fef9716d08a4efbbaafe7292f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5acb9071c413180acd219fc0b6756c2f1b1a9249576fb96d55822b63b1bf5ac3
[INFO] running `Command { std: "docker" "start" "-a" "5acb9071c413180acd219fc0b6756c2f1b1a9249576fb96d55822b63b1bf5ac3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling possiblyrandom v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "5acb9071c413180acd219fc0b6756c2f1b1a9249576fb96d55822b63b1bf5ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5acb9071c413180acd219fc0b6756c2f1b1a9249576fb96d55822b63b1bf5ac3", kill_on_drop: false }`
[INFO] [stdout] 5acb9071c413180acd219fc0b6756c2f1b1a9249576fb96d55822b63b1bf5ac3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4cafc5aa33acfdd1c7e4b4f05dbfcd1b5da4c3996f3ddcb6b2a4dec0d4ad133
[INFO] running `Command { std: "docker" "start" "-a" "a4cafc5aa33acfdd1c7e4b4f05dbfcd1b5da4c3996f3ddcb6b2a4dec0d4ad133", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `cfg-if v1.0.3`
[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 `cfg-if v1.0.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cfg-if-1.0.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "a4cafc5aa33acfdd1c7e4b4f05dbfcd1b5da4c3996f3ddcb6b2a4dec0d4ad133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4cafc5aa33acfdd1c7e4b4f05dbfcd1b5da4c3996f3ddcb6b2a4dec0d4ad133", kill_on_drop: false }`
[INFO] [stdout] a4cafc5aa33acfdd1c7e4b4f05dbfcd1b5da4c3996f3ddcb6b2a4dec0d4ad133