[INFO] fetching crate virtual-buffer 2.0.0...
[INFO] checking virtual-buffer-2.0.0 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate virtual-buffer 2.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate virtual-buffer 2.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate virtual-buffer 2.0.0
[INFO] tweaked toml for crates.io crate virtual-buffer 2.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate virtual-buffer 2.0.0 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate virtual-buffer 2.0.0 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 468571ff4ae5379856df4678d57e2a81b082d9d44a6b8a791d712960d0c2aa3f
[INFO] running `Command { std: "docker" "start" "-a" "468571ff4ae5379856df4678d57e2a81b082d9d44a6b8a791d712960d0c2aa3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "468571ff4ae5379856df4678d57e2a81b082d9d44a6b8a791d712960d0c2aa3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "468571ff4ae5379856df4678d57e2a81b082d9d44a6b8a791d712960d0c2aa3f", kill_on_drop: false }`
[INFO] [stdout] 468571ff4ae5379856df4678d57e2a81b082d9d44a6b8a791d712960d0c2aa3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49fc6879e1023097f60ec82abdef812fc77d3c9fdfe397203e49d2a694df1c05
[INFO] running `Command { std: "docker" "start" "-a" "49fc6879e1023097f60ec82abdef812fc77d3c9fdfe397203e49d2a694df1c05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]     Checking virtual-buffer v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "49fc6879e1023097f60ec82abdef812fc77d3c9fdfe397203e49d2a694df1c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49fc6879e1023097f60ec82abdef812fc77d3c9fdfe397203e49d2a694df1c05", kill_on_drop: false }`
[INFO] [stdout] 49fc6879e1023097f60ec82abdef812fc77d3c9fdfe397203e49d2a694df1c05
