[INFO] fetching crate rc-u8-reader 2.0.15...
[INFO] building rc-u8-reader-2.0.15 against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334
[INFO] extracting crate rc-u8-reader 2.0.15 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate rc-u8-reader 2.0.15 on toolchain 222c5724ecc922fe67815f428c19f82c129d9386
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rc-u8-reader 2.0.15
[INFO] finished tweaking crates.io crate rc-u8-reader 2.0.15
[INFO] tweaked toml for crates.io crate rc-u8-reader 2.0.15 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df3816aaba175d766a774903947705ee82673c80b3cd4c8926717a730e38863c
[INFO] running `Command { std: "docker" "start" "-a" "df3816aaba175d766a774903947705ee82673c80b3cd4c8926717a730e38863c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df3816aaba175d766a774903947705ee82673c80b3cd4c8926717a730e38863c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df3816aaba175d766a774903947705ee82673c80b3cd4c8926717a730e38863c", kill_on_drop: false }`
[INFO] [stdout] df3816aaba175d766a774903947705ee82673c80b3cd4c8926717a730e38863c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7e3b15bfa4b94aa354d44a6370352289868c420b2977d2fd6dc4acebfb9e4ce
[INFO] running `Command { std: "docker" "start" "-a" "c7e3b15bfa4b94aa354d44a6370352289868c420b2977d2fd6dc4acebfb9e4ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling debug-helper v0.3.13
[INFO] [stderr]    Compiling rc-u8-reader v2.0.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "c7e3b15bfa4b94aa354d44a6370352289868c420b2977d2fd6dc4acebfb9e4ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e3b15bfa4b94aa354d44a6370352289868c420b2977d2fd6dc4acebfb9e4ce", kill_on_drop: false }`
[INFO] [stdout] c7e3b15bfa4b94aa354d44a6370352289868c420b2977d2fd6dc4acebfb9e4ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ee384aa5123634f450bb9521c7558b81f0f603c43c5c3973f4f7209cf3f0f87
[INFO] running `Command { std: "docker" "start" "-a" "6ee384aa5123634f450bb9521c7558b81f0f603c43c5c3973f4f7209cf3f0f87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rc-u8-reader v2.0.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rc_u8_reader-d05d3c797e9c63d0)
[INFO] running `Command { std: "docker" "inspect" "6ee384aa5123634f450bb9521c7558b81f0f603c43c5c3973f4f7209cf3f0f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ee384aa5123634f450bb9521c7558b81f0f603c43c5c3973f4f7209cf3f0f87", kill_on_drop: false }`
[INFO] [stdout] 6ee384aa5123634f450bb9521c7558b81f0f603c43c5c3973f4f7209cf3f0f87