[INFO] fetching crate mqttbytes 0.6.0...
[INFO] testing mqttbytes-0.6.0 against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628
[INFO] extracting crate mqttbytes 0.6.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mqttbytes 0.6.0
[INFO] finished tweaking crates.io crate mqttbytes 0.6.0
[INFO] tweaked toml for crates.io crate mqttbytes 0.6.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mqttbytes 0.6.0 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]     Updating crates.io index
[INFO] [stderr]      Locking 88 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (available: v1.4.1)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3bb29e0a9861f5297dfdc89fb960d9318a3ead602fb432f7c195b4a82eba97ce
[INFO] running `Command { std: "docker" "start" "-a" "3bb29e0a9861f5297dfdc89fb960d9318a3ead602fb432f7c195b4a82eba97ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bb29e0a9861f5297dfdc89fb960d9318a3ead602fb432f7c195b4a82eba97ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bb29e0a9861f5297dfdc89fb960d9318a3ead602fb432f7c195b4a82eba97ce", kill_on_drop: false }`
[INFO] [stdout] 3bb29e0a9861f5297dfdc89fb960d9318a3ead602fb432f7c195b4a82eba97ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b54afafdca1bb3ba28d9e64011fc5619a6c946841c04194aed6b70c727700493
[INFO] running `Command { std: "docker" "start" "-a" "b54afafdca1bb3ba28d9e64011fc5619a6c946841c04194aed6b70c727700493", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling mqttbytes v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `v5`
[INFO] [stdout]    --> src/v5/puback.rs:205:7
[INFO] [stdout]     |
[INFO] [stdout] 205 | #[cfg(v5)]
[INFO] [stdout]     |       ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(v5)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(v5)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: found config with similar value
[INFO] [stdout]     |
[INFO] [stdout] 205 - #[cfg(v5)]
[INFO] [stdout] 205 + #[cfg(feature = "v5")]
[INFO] [stdout]     |
[INFO] [stdout] help: found config with similar value
[INFO] [stdout]     |
[INFO] [stdout] 205 - #[cfg(v5)]
[INFO] [stdout] 205 + #[cfg(target_env = "v5")]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "b54afafdca1bb3ba28d9e64011fc5619a6c946841c04194aed6b70c727700493", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54afafdca1bb3ba28d9e64011fc5619a6c946841c04194aed6b70c727700493", kill_on_drop: false }`
[INFO] [stdout] b54afafdca1bb3ba28d9e64011fc5619a6c946841c04194aed6b70c727700493
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1d4db5ea0eff49ccae3802f905608b86146fa8570a5c91b39b2d8db8fa51ecd8
[INFO] running `Command { std: "docker" "start" "-a" "1d4db5ea0eff49ccae3802f905608b86146fa8570a5c91b39b2d8db8fa51ecd8", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `cast v0.3.0`
[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 `cast v0.3.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cast-0.3.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "1d4db5ea0eff49ccae3802f905608b86146fa8570a5c91b39b2d8db8fa51ecd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d4db5ea0eff49ccae3802f905608b86146fa8570a5c91b39b2d8db8fa51ecd8", kill_on_drop: false }`
[INFO] [stdout] 1d4db5ea0eff49ccae3802f905608b86146fa8570a5c91b39b2d8db8fa51ecd8