[INFO] fetching crate microvmi 0.2.3...
[INFO] checking microvmi-0.2.3 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate microvmi 0.2.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate microvmi 0.2.3 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microvmi 0.2.3
[INFO] finished tweaking crates.io crate microvmi 0.2.3
[INFO] tweaked toml for crates.io crate microvmi 0.2.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate microvmi 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fae0497a2771042655421593cc13db722757f6666d5720599275f92d7ad28213
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fae0497a2771042655421593cc13db722757f6666d5720599275f92d7ad28213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fae0497a2771042655421593cc13db722757f6666d5720599275f92d7ad28213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fae0497a2771042655421593cc13db722757f6666d5720599275f92d7ad28213", kill_on_drop: false }`
[INFO] [stdout] fae0497a2771042655421593cc13db722757f6666d5720599275f92d7ad28213
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80efa2cb1c03e3de3a854edc69e2330b0309bd114fe533abcd20e12ceff5d3cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80efa2cb1c03e3de3a854edc69e2330b0309bd114fe533abcd20e12ceff5d3cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling cbindgen v0.18.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling test-case v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking predicates v1.0.7
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling mockall_derive v0.9.1
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking mockall v0.9.1
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling microvmi v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "80efa2cb1c03e3de3a854edc69e2330b0309bd114fe533abcd20e12ceff5d3cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80efa2cb1c03e3de3a854edc69e2330b0309bd114fe533abcd20e12ceff5d3cc", kill_on_drop: false }`
[INFO] [stdout] 80efa2cb1c03e3de3a854edc69e2330b0309bd114fe533abcd20e12ceff5d3cc