[INFO] fetching crate json_comments 0.2.0...
[INFO] testing json_comments-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate json_comments 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate json_comments 0.2.0 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 json_comments 0.2.0
[INFO] finished tweaking crates.io crate json_comments 0.2.0
[INFO] tweaked toml for crates.io crate json_comments 0.2.0 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] feaf44b8d9c9df60d43f18aadea70136aa7c1a3f189114e094e0f5e312424351
[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" "feaf44b8d9c9df60d43f18aadea70136aa7c1a3f189114e094e0f5e312424351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "feaf44b8d9c9df60d43f18aadea70136aa7c1a3f189114e094e0f5e312424351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feaf44b8d9c9df60d43f18aadea70136aa7c1a3f189114e094e0f5e312424351", kill_on_drop: false }`
[INFO] [stdout] feaf44b8d9c9df60d43f18aadea70136aa7c1a3f189114e094e0f5e312424351
[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] af248de7c253f9e18aee21f20da34d72b322d6e45aa0372bc358b3288b8b766a
[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" "af248de7c253f9e18aee21f20da34d72b322d6e45aa0372bc358b3288b8b766a", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_comments v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "af248de7c253f9e18aee21f20da34d72b322d6e45aa0372bc358b3288b8b766a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af248de7c253f9e18aee21f20da34d72b322d6e45aa0372bc358b3288b8b766a", kill_on_drop: false }`
[INFO] [stdout] af248de7c253f9e18aee21f20da34d72b322d6e45aa0372bc358b3288b8b766a
[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] fe2d1327618942956b0672adcb368f2ef67f4822fa82731c2417ea35b71bcac2
[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" "fe2d1327618942956b0672adcb368f2ef67f4822fa82731c2417ea35b71bcac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_comments v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "fe2d1327618942956b0672adcb368f2ef67f4822fa82731c2417ea35b71bcac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe2d1327618942956b0672adcb368f2ef67f4822fa82731c2417ea35b71bcac2", kill_on_drop: false }`
[INFO] [stdout] fe2d1327618942956b0672adcb368f2ef67f4822fa82731c2417ea35b71bcac2
[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] 6c872e17a2228c63119c475a9fb6ae5ddd5b90b5a35378fb0a6564d8ef91bec4
[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" "6c872e17a2228c63119c475a9fb6ae5ddd5b90b5a35378fb0a6564d8ef91bec4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/json_comments-dbb58be638ced04f
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::block_comments ... ok
[INFO] [stdout] test tests::incomplete_comment ... ok
[INFO] [stdout] test tests::line_comments ... ok
[INFO] [stdout] test tests::incomplete_comment2 ... ok
[INFO] [stdout] test tests::incomplete_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests json_comments
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - StripComments (line 68) ... ok
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6c872e17a2228c63119c475a9fb6ae5ddd5b90b5a35378fb0a6564d8ef91bec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c872e17a2228c63119c475a9fb6ae5ddd5b90b5a35378fb0a6564d8ef91bec4", kill_on_drop: false }`
[INFO] [stdout] 6c872e17a2228c63119c475a9fb6ae5ddd5b90b5a35378fb0a6564d8ef91bec4