[INFO] fetching crate cov 0.0.5...
[INFO] testing cov-0.0.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate cov 0.0.5 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate cov 0.0.5 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cov 0.0.5
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cov 0.0.5
[INFO] tweaked toml for crates.io crate cov 0.0.5 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a741fbb186c5e39f59190d79ab65e9c282ac10e63223823a92b9c8f52161fa0d
[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" "a741fbb186c5e39f59190d79ab65e9c282ac10e63223823a92b9c8f52161fa0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a741fbb186c5e39f59190d79ab65e9c282ac10e63223823a92b9c8f52161fa0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a741fbb186c5e39f59190d79ab65e9c282ac10e63223823a92b9c8f52161fa0d", kill_on_drop: false }`
[INFO] [stdout] a741fbb186c5e39f59190d79ab65e9c282ac10e63223823a92b9c8f52161fa0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66e17730d3e7584e0cebe9b2f4d7ba206039fafc2819a8e62edc39e8fc26d832
[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" "66e17730d3e7584e0cebe9b2f4d7ba206039fafc2819a8e62edc39e8fc26d832", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling shawshank v0.2.3
[INFO] [stderr]    Compiling cov v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |     cause: Option<Box<StdError + Send + 'static>>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + Send + 'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:142:32
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stdout]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:143:41
[INFO] [stdout]     |
[INFO] [stdout] 143 |         self.cause.as_ref().map(|e| -> &StdError { &**e })
[INFO] [stdout]     |                                         ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.25s
[INFO] running `Command { std: "docker" "inspect" "66e17730d3e7584e0cebe9b2f4d7ba206039fafc2819a8e62edc39e8fc26d832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66e17730d3e7584e0cebe9b2f4d7ba206039fafc2819a8e62edc39e8fc26d832", kill_on_drop: false }`
[INFO] [stdout] 66e17730d3e7584e0cebe9b2f4d7ba206039fafc2819a8e62edc39e8fc26d832
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 530964e1c80080eaf83843032b089dea7e0801978a4193b322522309c5dee585
[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" "530964e1c80080eaf83843032b089dea7e0801978a4193b322522309c5dee585", kill_on_drop: false }`
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |     cause: Option<Box<StdError + Send + 'static>>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + Send + 'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:142:32
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stdout]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:143:41
[INFO] [stdout]     |
[INFO] [stdout] 143 |         self.cause.as_ref().map(|e| -> &StdError { &**e })
[INFO] [stdout]     |                                         ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cov v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |     cause: Option<Box<StdError + Send + 'static>>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + Send + 'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:142:32
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stdout]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:143:41
[INFO] [stdout]     |
[INFO] [stdout] 143 |         self.cause.as_ref().map(|e| -> &StdError { &**e })
[INFO] [stdout]     |                                         ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.21s
[INFO] running `Command { std: "docker" "inspect" "530964e1c80080eaf83843032b089dea7e0801978a4193b322522309c5dee585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530964e1c80080eaf83843032b089dea7e0801978a4193b322522309c5dee585", kill_on_drop: false }`
[INFO] [stdout] 530964e1c80080eaf83843032b089dea7e0801978a4193b322522309c5dee585
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bd396c9094ed18c98774182e5116912ff7b3d81e46c92639504f74fb00b281ff
[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" "bd396c9094ed18c98774182e5116912ff7b3d81e46c92639504f74fb00b281ff", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:123:23
[INFO] [stderr]     |
[INFO] [stderr] 123 |     cause: Option<Box<StdError + Send + 'static>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + Send + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:142:32
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:143:41
[INFO] [stderr]     |
[INFO] [stderr] 143 |         self.cause.as_ref().map(|e| -> &StdError { &**e })
[INFO] [stderr]     |                                         ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:123:23
[INFO] [stderr]     |
[INFO] [stderr] 123 |     cause: Option<Box<StdError + Send + 'static>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + Send + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:142:32
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:143:41
[INFO] [stderr]     |
[INFO] [stderr] 143 |         self.cause.as_ref().map(|e| -> &StdError { &**e })
[INFO] [stderr]     |                                         ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cov-a5b91e7085674531
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test reader::test_consume_to_end ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gcov-8fc975d330d25c07
[INFO] [stdout] test deserializer::test_deserialize_symbol ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] test test-data/trivial.rustc ... ok
[INFO] [stdout] test test-data/branches.gcc7 ... ok
[INFO] [stdout] test test-data/branches.clang ... ok
[INFO] [stdout] test test-data/loops.clang ... ok
[INFO] [stdout] test test-data/branches.rustc ... ok
[INFO] [stdout] test test-data/loops.gcc7 ... ok
[INFO] [stdout] test test-data/trivial.gcc7 ... ok
[INFO] [stdout] test test-data/trivial.clang ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok.
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cov
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/intern.rs - intern (line 7) ... ok
[INFO] [stdout] test src/intern.rs - intern::Interner::iter (line 170) ... ok
[INFO] [stdout] test src/intern.rs - intern::SerializeWithInterner::serialize_with_interner (line 271) ... ok
[INFO] [stdout] test src/intern.rs - intern (line 28) ... ok
[INFO] [stdout] test src/deserializer.rs - deserializer::with_interner (line 36) ... ok
[INFO] [stdout] test src/reader.rs - reader::Reader (line 23) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bd396c9094ed18c98774182e5116912ff7b3d81e46c92639504f74fb00b281ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd396c9094ed18c98774182e5116912ff7b3d81e46c92639504f74fb00b281ff", kill_on_drop: false }`
[INFO] [stdout] bd396c9094ed18c98774182e5116912ff7b3d81e46c92639504f74fb00b281ff