[INFO] fetching crate display-interface 0.4.0...
[INFO] testing display-interface-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate display-interface 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate display-interface 0.4.0 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 display-interface 0.4.0
[INFO] finished tweaking crates.io crate display-interface 0.4.0
[INFO] tweaked toml for crates.io crate display-interface 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d13203a3fa0dfc07de79cacc3a7b03af5d5590d8b0ce2c5f430341c81be8f0cc
[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" "d13203a3fa0dfc07de79cacc3a7b03af5d5590d8b0ce2c5f430341c81be8f0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d13203a3fa0dfc07de79cacc3a7b03af5d5590d8b0ce2c5f430341c81be8f0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13203a3fa0dfc07de79cacc3a7b03af5d5590d8b0ce2c5f430341c81be8f0cc", kill_on_drop: false }`
[INFO] [stdout] d13203a3fa0dfc07de79cacc3a7b03af5d5590d8b0ce2c5f430341c81be8f0cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bbb30ae12a8d53fa99a0c6dff913ded45d3342fca63d2f4ce44b256c72bea75
[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" "0bbb30ae12a8d53fa99a0c6dff913ded45d3342fca63d2f4ce44b256c72bea75", kill_on_drop: false }`
[INFO] [stderr]    Compiling display-interface v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "0bbb30ae12a8d53fa99a0c6dff913ded45d3342fca63d2f4ce44b256c72bea75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bbb30ae12a8d53fa99a0c6dff913ded45d3342fca63d2f4ce44b256c72bea75", kill_on_drop: false }`
[INFO] [stdout] 0bbb30ae12a8d53fa99a0c6dff913ded45d3342fca63d2f4ce44b256c72bea75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] cbf50c2065173d3d5ca98149982d8e103d96fe3e1c1443bba93d87e83454b54d
[INFO] running `Command { std: "docker" "start" "-a" "cbf50c2065173d3d5ca98149982d8e103d96fe3e1c1443bba93d87e83454b54d", kill_on_drop: false }`
[INFO] [stderr]    Compiling display-interface v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "cbf50c2065173d3d5ca98149982d8e103d96fe3e1c1443bba93d87e83454b54d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbf50c2065173d3d5ca98149982d8e103d96fe3e1c1443bba93d87e83454b54d", kill_on_drop: false }`
[INFO] [stdout] cbf50c2065173d3d5ca98149982d8e103d96fe3e1c1443bba93d87e83454b54d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] d2200d1a66e1f1bb993cba7b8226e8855f6b0f9f6c4d13e707f975c1a9aeffcb
[INFO] running `Command { std: "docker" "start" "-a" "d2200d1a66e1f1bb993cba7b8226e8855f6b0f9f6c4d13e707f975c1a9aeffcb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/display_interface-49b003466c8ca6be
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests display-interface
[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] [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" "d2200d1a66e1f1bb993cba7b8226e8855f6b0f9f6c4d13e707f975c1a9aeffcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2200d1a66e1f1bb993cba7b8226e8855f6b0f9f6c4d13e707f975c1a9aeffcb", kill_on_drop: false }`
[INFO] [stdout] d2200d1a66e1f1bb993cba7b8226e8855f6b0f9f6c4d13e707f975c1a9aeffcb