[INFO] fetching crate cxx-demo 0.0.6...
[INFO] testing cxx-demo-0.0.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate cxx-demo 0.0.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cxx-demo 0.0.6 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 cxx-demo 0.0.6
[INFO] finished tweaking crates.io crate cxx-demo 0.0.6
[INFO] tweaked toml for crates.io crate cxx-demo 0.0.6 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 65fdbd045e5569c0fe2abd10c087fa1f825ec408f5ad48941246001295ef3486
[INFO] running `Command { std: "docker" "start" "-a" "65fdbd045e5569c0fe2abd10c087fa1f825ec408f5ad48941246001295ef3486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65fdbd045e5569c0fe2abd10c087fa1f825ec408f5ad48941246001295ef3486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65fdbd045e5569c0fe2abd10c087fa1f825ec408f5ad48941246001295ef3486", kill_on_drop: false }`
[INFO] [stdout] 65fdbd045e5569c0fe2abd10c087fa1f825ec408f5ad48941246001295ef3486
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9df240ca1217a6e9fe60e92299a1cf82e2f32955fb2e58434302ab2b188c7530
[INFO] running `Command { std: "docker" "start" "-a" "9df240ca1217a6e9fe60e92299a1cf82e2f32955fb2e58434302ab2b188c7530", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling scratch v1.0.0
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.26
[INFO] [stderr]    Compiling codespan-reporting v0.9.5
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling link-cplusplus v1.0.4
[INFO] [stderr]    Compiling cxx v1.0.26
[INFO] [stderr]    Compiling cxx-build v1.0.26
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.26
[INFO] [stderr]    Compiling cxx-demo v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `new_blobstore_client`
[INFO] [stdout]   --> src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn new_blobstore_client() -> UniquePtr<BlobstoreClient>;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `put`
[INFO] [stdout]   --> src/lib.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tag`
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `metadata`
[INFO] [stdout]   --> src/lib.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.09s
[INFO] running `Command { std: "docker" "inspect" "9df240ca1217a6e9fe60e92299a1cf82e2f32955fb2e58434302ab2b188c7530", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9df240ca1217a6e9fe60e92299a1cf82e2f32955fb2e58434302ab2b188c7530", kill_on_drop: false }`
[INFO] [stdout] 9df240ca1217a6e9fe60e92299a1cf82e2f32955fb2e58434302ab2b188c7530
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 2a78d44e5624f399fcc21af4e7b12f430285a23888533d5b0e4024ed78d1c518
[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" "2a78d44e5624f399fcc21af4e7b12f430285a23888533d5b0e4024ed78d1c518", kill_on_drop: false }`
[INFO] [stderr]    Compiling cxx-demo v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `new_blobstore_client`
[INFO] [stdout]   --> src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn new_blobstore_client() -> UniquePtr<BlobstoreClient>;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `put`
[INFO] [stdout]   --> src/lib.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tag`
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `metadata`
[INFO] [stdout]   --> src/lib.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "2a78d44e5624f399fcc21af4e7b12f430285a23888533d5b0e4024ed78d1c518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a78d44e5624f399fcc21af4e7b12f430285a23888533d5b0e4024ed78d1c518", kill_on_drop: false }`
[INFO] [stdout] 2a78d44e5624f399fcc21af4e7b12f430285a23888533d5b0e4024ed78d1c518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 57267ae27ce7ec45fc963bbabbb005794f535f90a913afc658a0f83bcd428952
[INFO] running `Command { std: "docker" "start" "-a" "57267ae27ce7ec45fc963bbabbb005794f535f90a913afc658a0f83bcd428952", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `new_blobstore_client`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:22:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 22 |         fn new_blobstore_client() -> UniquePtr<BlobstoreClient>;
[INFO] [stdout] 
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `put`
[INFO] [stderr]   --> src/lib.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tag`
[INFO] [stderr]   --> src/lib.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `metadata`
[INFO] [stderr]   --> src/lib.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/lib.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cxx_demo-8c395fd2e7c074cf
[INFO] [stderr]    Doc-tests cxx-demo
[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" "57267ae27ce7ec45fc963bbabbb005794f535f90a913afc658a0f83bcd428952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57267ae27ce7ec45fc963bbabbb005794f535f90a913afc658a0f83bcd428952", kill_on_drop: false }`
[INFO] [stdout] 57267ae27ce7ec45fc963bbabbb005794f535f90a913afc658a0f83bcd428952