[INFO] fetching crate error_defs 0.1.0...
[INFO] testing error_defs-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate error_defs 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate error_defs 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate error_defs 0.1.0
[INFO] finished tweaking crates.io crate error_defs 0.1.0
[INFO] tweaked toml for crates.io crate error_defs 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed0ff1d6c52c08be28835a2b3087eb82f0d5d9353af492c39b3e874f0450f440
[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" "ed0ff1d6c52c08be28835a2b3087eb82f0d5d9353af492c39b3e874f0450f440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed0ff1d6c52c08be28835a2b3087eb82f0d5d9353af492c39b3e874f0450f440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed0ff1d6c52c08be28835a2b3087eb82f0d5d9353af492c39b3e874f0450f440", kill_on_drop: false }`
[INFO] [stdout] ed0ff1d6c52c08be28835a2b3087eb82f0d5d9353af492c39b3e874f0450f440
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46a8e2d1bb655f8e36406ea83a7d5c7783cf2334e57e6dc3a8c35ab6d9f6585e
[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" "46a8e2d1bb655f8e36406ea83a7d5c7783cf2334e57e6dc3a8c35ab6d9f6585e", kill_on_drop: false }`
[INFO] [stderr]    Compiling error_defs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "46a8e2d1bb655f8e36406ea83a7d5c7783cf2334e57e6dc3a8c35ab6d9f6585e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a8e2d1bb655f8e36406ea83a7d5c7783cf2334e57e6dc3a8c35ab6d9f6585e", kill_on_drop: false }`
[INFO] [stdout] 46a8e2d1bb655f8e36406ea83a7d5c7783cf2334e57e6dc3a8c35ab6d9f6585e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e883372cbba16d7964b03a3433522ad3bfa414c5dbfa73bcaa78c178fbd8d17
[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" "3e883372cbba16d7964b03a3433522ad3bfa414c5dbfa73bcaa78c178fbd8d17", kill_on_drop: false }`
[INFO] [stderr]    Compiling error_defs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> examples/example.rs:34:55
[INFO] [stdout]    |
[INFO] [stdout] 34 |         println!("error::Error::description => {}", e.description());
[INFO] [stdout]    |                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> examples/example.rs:35:57
[INFO] [stdout]    |
[INFO] [stdout] 35 |         println!("error: Error::cause       => {:?}", e.cause());
[INFO] [stdout]    |                                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> examples/example.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_defs! {
[INFO] [stdout] 8  | |     error Example<T, U: Error> {
[INFO] [stdout] 9  | |         VariantA
[INFO] [stdout] 10 | |             => "short description",
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "3e883372cbba16d7964b03a3433522ad3bfa414c5dbfa73bcaa78c178fbd8d17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e883372cbba16d7964b03a3433522ad3bfa414c5dbfa73bcaa78c178fbd8d17", kill_on_drop: false }`
[INFO] [stdout] 3e883372cbba16d7964b03a3433522ad3bfa414c5dbfa73bcaa78c178fbd8d17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0a30930758de4173624ec9adbe8aa0610eb15122435bb28236d05d31332d0044
[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" "0a30930758de4173624ec9adbe8aa0610eb15122435bb28236d05d31332d0044", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> examples/example.rs:34:55
[INFO] [stderr]    |
[INFO] [stderr] 34 |         println!("error::Error::description => {}", e.description());
[INFO] [stderr]    |                                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> examples/example.rs:35:57
[INFO] [stderr]    |
[INFO] [stderr] 35 |         println!("error: Error::cause       => {:?}", e.cause());
[INFO] [stderr]    |                                                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/error_defs-ab40bb53522c2848
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests error_defs
[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] [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" "0a30930758de4173624ec9adbe8aa0610eb15122435bb28236d05d31332d0044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a30930758de4173624ec9adbe8aa0610eb15122435bb28236d05d31332d0044", kill_on_drop: false }`
[INFO] [stdout] 0a30930758de4173624ec9adbe8aa0610eb15122435bb28236d05d31332d0044