[INFO] fetching crate serial_int 2.0.1...
[INFO] building serial_int-2.0.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate serial_int 2.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate serial_int 2.0.1
[INFO] finished tweaking crates.io crate serial_int 2.0.1
[INFO] tweaked toml for crates.io crate serial_int 2.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serial_int 2.0.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serial_int 2.0.1 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e19341c93d7cf955506f53fb9d95561730dce0ffd4f0c577d38ca7755cb488b2
[INFO] running `Command { std: "docker" "start" "-a" "e19341c93d7cf955506f53fb9d95561730dce0ffd4f0c577d38ca7755cb488b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e19341c93d7cf955506f53fb9d95561730dce0ffd4f0c577d38ca7755cb488b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19341c93d7cf955506f53fb9d95561730dce0ffd4f0c577d38ca7755cb488b2", kill_on_drop: false }`
[INFO] [stdout] e19341c93d7cf955506f53fb9d95561730dce0ffd4f0c577d38ca7755cb488b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6033124fb36a99e98a94209a4c33ffcecf75caa47bbc79416f02ff7c5465d967
[INFO] running `Command { std: "docker" "start" "-a" "6033124fb36a99e98a94209a4c33ffcecf75caa47bbc79416f02ff7c5465d967", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial_int v2.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "6033124fb36a99e98a94209a4c33ffcecf75caa47bbc79416f02ff7c5465d967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6033124fb36a99e98a94209a4c33ffcecf75caa47bbc79416f02ff7c5465d967", kill_on_drop: false }`
[INFO] [stdout] 6033124fb36a99e98a94209a4c33ffcecf75caa47bbc79416f02ff7c5465d967
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ef32aa31751e18735f482460df7a6de19b310f16eb22a430b2f0ab9c696a9be
[INFO] running `Command { std: "docker" "start" "-a" "2ef32aa31751e18735f482460df7a6de19b310f16eb22a430b2f0ab9c696a9be", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling serial_int v2.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "2ef32aa31751e18735f482460df7a6de19b310f16eb22a430b2f0ab9c696a9be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ef32aa31751e18735f482460df7a6de19b310f16eb22a430b2f0ab9c696a9be", kill_on_drop: false }`
[INFO] [stdout] 2ef32aa31751e18735f482460df7a6de19b310f16eb22a430b2f0ab9c696a9be