[INFO] fetching crate rate_my_professor_api_rs 0.1.5...
[INFO] checking rate_my_professor_api_rs-0.1.5 against master#fe55364329579d361b1ab565728bc033a7dba07e for pr-146013
[INFO] extracting crate rate_my_professor_api_rs 0.1.5 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rate_my_professor_api_rs 0.1.5
[INFO] finished tweaking crates.io crate rate_my_professor_api_rs 0.1.5
[INFO] tweaked toml for crates.io crate rate_my_professor_api_rs 0.1.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rate_my_professor_api_rs 0.1.5 on toolchain fe55364329579d361b1ab565728bc033a7dba07e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rate_my_professor_api_rs 0.1.5 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" "+fe55364329579d361b1ab565728bc033a7dba07e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded filepath v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+fe55364329579d361b1ab565728bc033a7dba07e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db0fee897273aba9b2181b88b6972efaf5a557f1fd0729e0fa0dc744a80f2601
[INFO] running `Command { std: "docker" "start" "-a" "db0fee897273aba9b2181b88b6972efaf5a557f1fd0729e0fa0dc744a80f2601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db0fee897273aba9b2181b88b6972efaf5a557f1fd0729e0fa0dc744a80f2601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db0fee897273aba9b2181b88b6972efaf5a557f1fd0729e0fa0dc744a80f2601", kill_on_drop: false }`
[INFO] [stdout] db0fee897273aba9b2181b88b6972efaf5a557f1fd0729e0fa0dc744a80f2601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+fe55364329579d361b1ab565728bc033a7dba07e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac7151e1fee2d23a26a2d846127e6a0ca0b2a23e848680961029bd62ce9ea9c7
[INFO] running `Command { std: "docker" "start" "-a" "ac7151e1fee2d23a26a2d846127e6a0ca0b2a23e848680961029bd62ce9ea9c7", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `stable_deref_trait v1.2.0`
[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 `stable_deref_trait v1.2.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stable_deref_trait-1.2.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "ac7151e1fee2d23a26a2d846127e6a0ca0b2a23e848680961029bd62ce9ea9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac7151e1fee2d23a26a2d846127e6a0ca0b2a23e848680961029bd62ce9ea9c7", kill_on_drop: false }`
[INFO] [stdout] ac7151e1fee2d23a26a2d846127e6a0ca0b2a23e848680961029bd62ce9ea9c7