[INFO] fetching crate tracers-dyn-noop 0.1.0...
[INFO] testing tracers-dyn-noop-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate tracers-dyn-noop 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate tracers-dyn-noop 0.1.0 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 tracers-dyn-noop 0.1.0
[INFO] finished tweaking crates.io crate tracers-dyn-noop 0.1.0
[INFO] tweaked toml for crates.io crate tracers-dyn-noop 0.1.0 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 3518d12fb258a33fd7db00c9f29ed87918e22cd2132864a3201ec48e3d33305a
[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" "3518d12fb258a33fd7db00c9f29ed87918e22cd2132864a3201ec48e3d33305a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3518d12fb258a33fd7db00c9f29ed87918e22cd2132864a3201ec48e3d33305a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3518d12fb258a33fd7db00c9f29ed87918e22cd2132864a3201ec48e3d33305a", kill_on_drop: false }`
[INFO] [stdout] 3518d12fb258a33fd7db00c9f29ed87918e22cd2132864a3201ec48e3d33305a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 16ad4e0376233f3aaed928dc7d8f892e42b01dc847b7e82231d6feaab35aa32b
[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" "16ad4e0376233f3aaed928dc7d8f892e42b01dc847b7e82231d6feaab35aa32b", kill_on_drop: false }`
[INFO] [stderr]    Compiling strum v0.16.0
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling tracers-core v0.1.0
[INFO] [stderr]    Compiling tracers-dyn-noop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.47s
[INFO] running `Command { std: "docker" "inspect" "16ad4e0376233f3aaed928dc7d8f892e42b01dc847b7e82231d6feaab35aa32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ad4e0376233f3aaed928dc7d8f892e42b01dc847b7e82231d6feaab35aa32b", kill_on_drop: false }`
[INFO] [stdout] 16ad4e0376233f3aaed928dc7d8f892e42b01dc847b7e82231d6feaab35aa32b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] be1a4dc53abc0dec840478765da42dd39ae7619be548d7c5dfd6078275a4afb8
[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" "be1a4dc53abc0dec840478765da42dd39ae7619be548d7c5dfd6078275a4afb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracers-dyn-noop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "be1a4dc53abc0dec840478765da42dd39ae7619be548d7c5dfd6078275a4afb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1a4dc53abc0dec840478765da42dd39ae7619be548d7c5dfd6078275a4afb8", kill_on_drop: false }`
[INFO] [stdout] be1a4dc53abc0dec840478765da42dd39ae7619be548d7c5dfd6078275a4afb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] c78853173937b8f0d854329c41cc16ab5089ad24964e3778c7ca73fe89e192c7
[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" "c78853173937b8f0d854329c41cc16ab5089ad24964e3778c7ca73fe89e192c7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tracers_dyn_noop-aea994f9b4b221eb
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracers-dyn-noop
[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" "c78853173937b8f0d854329c41cc16ab5089ad24964e3778c7ca73fe89e192c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c78853173937b8f0d854329c41cc16ab5089ad24964e3778c7ca73fe89e192c7", kill_on_drop: false }`
[INFO] [stdout] c78853173937b8f0d854329c41cc16ab5089ad24964e3778c7ca73fe89e192c7