[INFO] cloning repository https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7aec6629d2a16a4cd3469a9fa5a3275c14833355 [INFO] checking mimuw-jnp2-rust/small-task-7-back-to-the-futures against master#0f353363965ebf05e0757f7679c800b39c51a07e for pr-144896 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-7-back-to-the-futures" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures [INFO] finished tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures [INFO] tweaked toml for git repo https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures on toolchain 0f353363965ebf05e0757f7679c800b39c51a07e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f353363965ebf05e0757f7679c800b39c51a07e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mimuw-jnp2-rust/small-task-7-back-to-the-futures 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" "+0f353363965ebf05e0757f7679c800b39c51a07e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+0f353363965ebf05e0757f7679c800b39c51a07e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] Error response from daemon: symlink /proc/mounts /var/lib/docker/overlay2/e5c5c4c327042a4e851c0e9e66314ed93a9d0a0cf70cc111482ccd1504636534-init/merged/etc/mtab: file exists sandbox container could not be created: command failed: exit status: 1 Error response from daemon: symlink /proc/mounts /var/lib/docker/overlay2/e5c5c4c327042a4e851c0e9e66314ed93a9d0a0cf70cc111482ccd1504636534-init/merged/etc/mtab: file exists Caused by: command failed: exit status: 1 Error response from daemon: symlink /proc/mounts /var/lib/docker/overlay2/e5c5c4c327042a4e851c0e9e66314ed93a9d0a0cf70cc111482ccd1504636534-init/merged/etc/mtab: file exists