[INFO] fetching crate rc-u8-reader 2.0.16...
[INFO] building rc-u8-reader-2.0.16 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate rc-u8-reader 2.0.16 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate rc-u8-reader 2.0.16
[INFO] finished tweaking crates.io crate rc-u8-reader 2.0.16
[INFO] tweaked toml for crates.io crate rc-u8-reader 2.0.16 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rc-u8-reader 2.0.16 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded debug-helper v0.3.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7d2624c6911dc63cf278e0396c57db3d3b11585073b5dc34f27faf1cf6d6db5
[INFO] running `Command { std: "docker" "start" "-a" "c7d2624c6911dc63cf278e0396c57db3d3b11585073b5dc34f27faf1cf6d6db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7d2624c6911dc63cf278e0396c57db3d3b11585073b5dc34f27faf1cf6d6db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7d2624c6911dc63cf278e0396c57db3d3b11585073b5dc34f27faf1cf6d6db5", kill_on_drop: false }`
[INFO] [stdout] c7d2624c6911dc63cf278e0396c57db3d3b11585073b5dc34f27faf1cf6d6db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0ecce5bddc171c7e14bcdf4bcc45a6a0c93064e73f79b41af5615319013d255
[INFO] running `Command { std: "docker" "start" "-a" "a0ecce5bddc171c7e14bcdf4bcc45a6a0c93064e73f79b41af5615319013d255", kill_on_drop: false }`
[INFO] [stderr]    Compiling debug-helper v0.3.13
[INFO] [stderr]    Compiling rc-u8-reader v2.0.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly`
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 | #![cfg_attr(feature = "nightly", feature(read_initializer, seek_convenience))]
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `tokio`
[INFO] [stdout]    = help: consider adding `nightly` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "a0ecce5bddc171c7e14bcdf4bcc45a6a0c93064e73f79b41af5615319013d255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0ecce5bddc171c7e14bcdf4bcc45a6a0c93064e73f79b41af5615319013d255", kill_on_drop: false }`
[INFO] [stdout] a0ecce5bddc171c7e14bcdf4bcc45a6a0c93064e73f79b41af5615319013d255
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3cf3db1e14a0dfd2f7442e5de743773e1cff3cd896f8053162c2935ba6a8efc
[INFO] running `Command { std: "docker" "start" "-a" "d3cf3db1e14a0dfd2f7442e5de743773e1cff3cd896f8053162c2935ba6a8efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rc-u8-reader v2.0.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly`
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 | #![cfg_attr(feature = "nightly", feature(read_initializer, seek_convenience))]
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `tokio`
[INFO] [stdout]    = help: consider adding `nightly` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly`
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 | #![cfg_attr(feature = "nightly", feature(read_initializer, seek_convenience))]
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `tokio`
[INFO] [stdout]    = help: consider adding `nightly` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "d3cf3db1e14a0dfd2f7442e5de743773e1cff3cd896f8053162c2935ba6a8efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3cf3db1e14a0dfd2f7442e5de743773e1cff3cd896f8053162c2935ba6a8efc", kill_on_drop: false }`
[INFO] [stdout] d3cf3db1e14a0dfd2f7442e5de743773e1cff3cd896f8053162c2935ba6a8efc