[INFO] cloning repository https://github.com/artem-korolev/serde_yaml_back_reference_fails
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artem-korolev/serde_yaml_back_reference_fails" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-korolev%2Fserde_yaml_back_reference_fails", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-korolev%2Fserde_yaml_back_reference_fails'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e9de68f005d50f47dfae036c3099867b9c92568
[INFO] testing artem-korolev/serde_yaml_back_reference_fails against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-korolev%2Fserde_yaml_back_reference_fails" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artem-korolev/serde_yaml_back_reference_fails on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/artem-korolev/serde_yaml_back_reference_fails
[INFO] finished tweaking git repo https://github.com/artem-korolev/serde_yaml_back_reference_fails
[INFO] tweaked toml for git repo https://github.com/artem-korolev/serde_yaml_back_reference_fails written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/artem-korolev/serde_yaml_back_reference_fails already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] 01cf2cbc5ca7f63893a8b8a2109bb16af902c664e934029329b0e4d73d314eb4
[INFO] running `Command { std: "docker" "start" "-a" "01cf2cbc5ca7f63893a8b8a2109bb16af902c664e934029329b0e4d73d314eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01cf2cbc5ca7f63893a8b8a2109bb16af902c664e934029329b0e4d73d314eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01cf2cbc5ca7f63893a8b8a2109bb16af902c664e934029329b0e4d73d314eb4", kill_on_drop: false }`
[INFO] [stdout] 01cf2cbc5ca7f63893a8b8a2109bb16af902c664e934029329b0e4d73d314eb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] d3d92dce341d09185b7d3d959bbd2c894971036596bdcc0f85c0ce11dbd6e076
[INFO] running `Command { std: "docker" "start" "-a" "d3d92dce341d09185b7d3d959bbd2c894971036596bdcc0f85c0ce11dbd6e076", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling serde_yaml v0.8.12
[INFO] [stderr]    Compiling serde_yaml_back_reference_fails v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.59s
[INFO] running `Command { std: "docker" "inspect" "d3d92dce341d09185b7d3d959bbd2c894971036596bdcc0f85c0ce11dbd6e076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3d92dce341d09185b7d3d959bbd2c894971036596bdcc0f85c0ce11dbd6e076", kill_on_drop: false }`
[INFO] [stdout] d3d92dce341d09185b7d3d959bbd2c894971036596bdcc0f85c0ce11dbd6e076
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ed67c8465c6336342cde737f98aa1f8a543a07d0f001a47df4e312d201e9e68
[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" "3ed67c8465c6336342cde737f98aa1f8a543a07d0f001a47df4e312d201e9e68", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_yaml_back_reference_fails v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "3ed67c8465c6336342cde737f98aa1f8a543a07d0f001a47df4e312d201e9e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ed67c8465c6336342cde737f98aa1f8a543a07d0f001a47df4e312d201e9e68", kill_on_drop: false }`
[INFO] [stdout] 3ed67c8465c6336342cde737f98aa1f8a543a07d0f001a47df4e312d201e9e68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b212b25caf40e159887081a6f4db834cefac25de3ee4b463451a0941ae87430
[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" "2b212b25caf40e159887081a6f4db834cefac25de3ee4b463451a0941ae87430", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_yaml_back_reference_fails-b9142eb22081c88e
[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" "2b212b25caf40e159887081a6f4db834cefac25de3ee4b463451a0941ae87430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b212b25caf40e159887081a6f4db834cefac25de3ee4b463451a0941ae87430", kill_on_drop: false }`
[INFO] [stdout] 2b212b25caf40e159887081a6f4db834cefac25de3ee4b463451a0941ae87430
