[INFO] fetching crate mdbook-tabs 0.2.3...
[INFO] checking mdbook-tabs-0.2.3 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate mdbook-tabs 0.2.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate mdbook-tabs 0.2.3
[INFO] finished tweaking crates.io crate mdbook-tabs 0.2.3
[INFO] tweaked toml for crates.io crate mdbook-tabs 0.2.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-tabs 0.2.3 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-tabs 0.2.3 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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 serde-keyvalue v0.1.0
[INFO] [stderr]   Downloaded mdbook-plugin-utils v0.2.3
[INFO] [stderr]   Downloaded remain v0.2.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e23db791ae00e2b3c2e4cd20d5a88a3545c1b2df97b3d7ace5f6566d6530133
[INFO] running `Command { std: "docker" "start" "-a" "2e23db791ae00e2b3c2e4cd20d5a88a3545c1b2df97b3d7ace5f6566d6530133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e23db791ae00e2b3c2e4cd20d5a88a3545c1b2df97b3d7ace5f6566d6530133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e23db791ae00e2b3c2e4cd20d5a88a3545c1b2df97b3d7ace5f6566d6530133", kill_on_drop: false }`
[INFO] [stdout] 2e23db791ae00e2b3c2e4cd20d5a88a3545c1b2df97b3d7ace5f6566d6530133
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c08867040d3bfb8884c3dc237a6394a0e98f642f662cce70f507cccaca62ed5
[INFO] running `Command { std: "docker" "start" "-a" "4c08867040d3bfb8884c3dc237a6394a0e98f642f662cce70f507cccaca62ed5", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `is_terminal_polyfill v1.70.1`
[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 `is_terminal_polyfill v1.70.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/is_terminal_polyfill-1.70.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "4c08867040d3bfb8884c3dc237a6394a0e98f642f662cce70f507cccaca62ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c08867040d3bfb8884c3dc237a6394a0e98f642f662cce70f507cccaca62ed5", kill_on_drop: false }`
[INFO] [stdout] 4c08867040d3bfb8884c3dc237a6394a0e98f642f662cce70f507cccaca62ed5