[INFO] fetching crate nanvm 0.1.1...
[INFO] building nanvm-0.1.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate nanvm 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate nanvm 0.1.1
[INFO] finished tweaking crates.io crate nanvm 0.1.1
[INFO] tweaked toml for crates.io crate nanvm 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nanvm 0.1.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nanvm 0.1.1 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded io-impl v0.11.0
[INFO] [stderr]   Downloaded io-trait v0.11.0
[INFO] [stderr]   Downloaded nanvm-lib v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8668f562c823d39126c45113d62771a77cd3781abf15d3d07c6aae1d02bcdebf
[INFO] running `Command { std: "docker" "start" "-a" "8668f562c823d39126c45113d62771a77cd3781abf15d3d07c6aae1d02bcdebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8668f562c823d39126c45113d62771a77cd3781abf15d3d07c6aae1d02bcdebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8668f562c823d39126c45113d62771a77cd3781abf15d3d07c6aae1d02bcdebf", kill_on_drop: false }`
[INFO] [stdout] 8668f562c823d39126c45113d62771a77cd3781abf15d3d07c6aae1d02bcdebf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb4a6a5c954631247e74d52649d61a347ae5661e420c4892a5110b6a92df2042
[INFO] running `Command { std: "docker" "start" "-a" "eb4a6a5c954631247e74d52649d61a347ae5661e420c4892a5110b6a92df2042", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling io-trait v0.11.0
[INFO] [stderr]    Compiling nanvm-lib v0.1.1
[INFO] [stderr]    Compiling io-impl v0.11.0
[INFO] [stderr]    Compiling nanvm v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `Command { std: "docker" "inspect" "eb4a6a5c954631247e74d52649d61a347ae5661e420c4892a5110b6a92df2042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4a6a5c954631247e74d52649d61a347ae5661e420c4892a5110b6a92df2042", kill_on_drop: false }`
[INFO] [stdout] eb4a6a5c954631247e74d52649d61a347ae5661e420c4892a5110b6a92df2042
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f33cd840f7c7725d17e075fc889ba047a7d498b58d405904933c5a8a58967e2d
[INFO] running `Command { std: "docker" "start" "-a" "f33cd840f7c7725d17e075fc889ba047a7d498b58d405904933c5a8a58967e2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling nanvm v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "f33cd840f7c7725d17e075fc889ba047a7d498b58d405904933c5a8a58967e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f33cd840f7c7725d17e075fc889ba047a7d498b58d405904933c5a8a58967e2d", kill_on_drop: false }`
[INFO] [stdout] f33cd840f7c7725d17e075fc889ba047a7d498b58d405904933c5a8a58967e2d