[INFO] fetching crate cb2util 0.0.1...
[INFO] testing cb2util-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate cb2util 0.0.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cb2util 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cb2util 0.0.1
[INFO] finished tweaking crates.io crate cb2util 0.0.1
[INFO] tweaked toml for crates.io crate cb2util 0.0.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cb2util 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0777df94f464351cd4c1783912d6b6a78f9d3f1839b02f3ce84b6288aa41f101
[INFO] running `Command { std: "docker" "start" "-a" "0777df94f464351cd4c1783912d6b6a78f9d3f1839b02f3ce84b6288aa41f101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0777df94f464351cd4c1783912d6b6a78f9d3f1839b02f3ce84b6288aa41f101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0777df94f464351cd4c1783912d6b6a78f9d3f1839b02f3ce84b6288aa41f101", kill_on_drop: false }`
[INFO] [stdout] 0777df94f464351cd4c1783912d6b6a78f9d3f1839b02f3ce84b6288aa41f101
[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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 03ed2557d467e98a23c04a7eb0f79fb06ed06301004e0e33c1be2bac32e0eea3
[INFO] running `Command { std: "docker" "start" "-a" "03ed2557d467e98a23c04a7eb0f79fb06ed06301004e0e33c1be2bac32e0eea3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling codebreaker v0.1.4
[INFO] [stderr]    Compiling cb2util v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.17s
[INFO] running `Command { std: "docker" "inspect" "03ed2557d467e98a23c04a7eb0f79fb06ed06301004e0e33c1be2bac32e0eea3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ed2557d467e98a23c04a7eb0f79fb06ed06301004e0e33c1be2bac32e0eea3", kill_on_drop: false }`
[INFO] [stdout] 03ed2557d467e98a23c04a7eb0f79fb06ed06301004e0e33c1be2bac32e0eea3
[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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b4efdb2525608fcf80e7c45f3e86acd275b57ec3322393ef327c8ec0854dea71
[INFO] running `Command { std: "docker" "start" "-a" "b4efdb2525608fcf80e7c45f3e86acd275b57ec3322393ef327c8ec0854dea71", kill_on_drop: false }`
[INFO] [stderr]    Compiling cb2util v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "b4efdb2525608fcf80e7c45f3e86acd275b57ec3322393ef327c8ec0854dea71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4efdb2525608fcf80e7c45f3e86acd275b57ec3322393ef327c8ec0854dea71", kill_on_drop: false }`
[INFO] [stdout] b4efdb2525608fcf80e7c45f3e86acd275b57ec3322393ef327c8ec0854dea71
[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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa3f2a5a5e907a057c24ada3e173a61fe459ab14f18f67190bcae8db3c32968f
[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" "fa3f2a5a5e907a057c24ada3e173a61fe459ab14f18f67190bcae8db3c32968f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cb2util-134458b2c62d2830
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fa3f2a5a5e907a057c24ada3e173a61fe459ab14f18f67190bcae8db3c32968f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa3f2a5a5e907a057c24ada3e173a61fe459ab14f18f67190bcae8db3c32968f", kill_on_drop: false }`
[INFO] [stdout] fa3f2a5a5e907a057c24ada3e173a61fe459ab14f18f67190bcae8db3c32968f