[INFO] fetching crate chainerror 0.7.0...
[INFO] testing chainerror-0.7.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate chainerror 0.7.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate chainerror 0.7.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chainerror 0.7.0
[INFO] finished tweaking crates.io crate chainerror 0.7.0
[INFO] tweaked toml for crates.io crate chainerror 0.7.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate chainerror 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4612dd1c98db936684cd7ceaf53e199668520978b999fd0cf27e5853de8618b1
[INFO] running `Command { std: "docker" "start" "-a" "4612dd1c98db936684cd7ceaf53e199668520978b999fd0cf27e5853de8618b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4612dd1c98db936684cd7ceaf53e199668520978b999fd0cf27e5853de8618b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4612dd1c98db936684cd7ceaf53e199668520978b999fd0cf27e5853de8618b1", kill_on_drop: false }`
[INFO] [stdout] 4612dd1c98db936684cd7ceaf53e199668520978b999fd0cf27e5853de8618b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6fdfb30a90ae691bb6a9c02a16ad3b774bc941ccadcbf09e292a07ee7bf039c
[INFO] running `Command { std: "docker" "start" "-a" "e6fdfb30a90ae691bb6a9c02a16ad3b774bc941ccadcbf09e292a07ee7bf039c", kill_on_drop: false }`
[INFO] [stderr]    Compiling chainerror v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |         self.iter().filter_map(Error::downcast_ref::<U>).next()
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:223:25
[INFO] [stdout]     |
[INFO] [stdout] 223 |             .filter_map(Error::downcast_ref::<ChainError<U>>)
[INFO] [stdout]     |                         ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "e6fdfb30a90ae691bb6a9c02a16ad3b774bc941ccadcbf09e292a07ee7bf039c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fdfb30a90ae691bb6a9c02a16ad3b774bc941ccadcbf09e292a07ee7bf039c", kill_on_drop: false }`
[INFO] [stdout] e6fdfb30a90ae691bb6a9c02a16ad3b774bc941ccadcbf09e292a07ee7bf039c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dda6317196ae7b1696a724f371d9ece5a449147d0a301c3cd99bc38db752823
[INFO] running `Command { std: "docker" "start" "-a" "2dda6317196ae7b1696a724f371d9ece5a449147d0a301c3cd99bc38db752823", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |         self.iter().filter_map(Error::downcast_ref::<U>).next()
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chainerror v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:223:25
[INFO] [stdout]     |
[INFO] [stdout] 223 |             .filter_map(Error::downcast_ref::<ChainError<U>>)
[INFO] [stdout]     |                         ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |         self.iter().filter_map(Error::downcast_ref::<U>).next()
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:223:25
[INFO] [stdout]     |
[INFO] [stdout] 223 |             .filter_map(Error::downcast_ref::<ChainError<U>>)
[INFO] [stdout]     |                         ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/test_iter.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 |         .filter_map(Error::downcast_ref::<io::Error>)
[INFO] [stdout]    |                     ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/test_iter.rs:91:53
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let io_error: Option<&io::Error> = err.and_then(Error::downcast_ref::<io::Error>);
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "2dda6317196ae7b1696a724f371d9ece5a449147d0a301c3cd99bc38db752823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dda6317196ae7b1696a724f371d9ece5a449147d0a301c3cd99bc38db752823", kill_on_drop: false }`
[INFO] [stdout] 2dda6317196ae7b1696a724f371d9ece5a449147d0a301c3cd99bc38db752823
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b99f76fc6a3f93353f2afb1ffd6021a8b6911d1c20d561e6e493a77b144cbe59
[INFO] running `Command { std: "docker" "start" "-a" "b99f76fc6a3f93353f2afb1ffd6021a8b6911d1c20d561e6e493a77b144cbe59", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:201:32
[INFO] [stderr]     |
[INFO] [stderr] 201 |         self.iter().filter_map(Error::downcast_ref::<U>).next()
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:223:25
[INFO] [stderr]     |
[INFO] [stderr] 223 |             .filter_map(Error::downcast_ref::<ChainError<U>>)
[INFO] [stderr]     |                         ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `chainerror` (lib) generated 2 warnings
[INFO] [stderr] warning: `chainerror` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test_iter.rs:27:21
[INFO] [stderr]    |
[INFO] [stderr] 27 |         .filter_map(Error::downcast_ref::<io::Error>)
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test_iter.rs:91:53
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let io_error: Option<&io::Error> = err.and_then(Error::downcast_ref::<io::Error>);
[INFO] [stderr]    |                                                     ^^^^^ help: use `dyn`: `<dyn Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `chainerror` (test "test_iter") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chainerror-9c951df3a75f9b2f)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_iter.rs (/opt/rustwide/target/debug/deps/test_iter-0785d4c05cdeb4b6)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_find_cause ... ok
[INFO] [stdout] test test_iter ... ok
[INFO] [stdout] test test_root_cause ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chainerror
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - derive_err_kind (line 745) ... ok
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] test src/lib.rs - ChainError<T>::find_chain_cause (line 210) ... ok
[INFO] [stdout] test src/lib.rs - (line 41) ... ok
[INFO] [stdout] test src/lib.rs - ChainError<T>::find_kind_or_cause (line 233) ... ok
[INFO] [stdout] test src/lib.rs - ChainError<T>::kind (line 262) ... ok
[INFO] [stdout] test src/lib.rs - derive_str_context (line 682) ... ok
[INFO] [stdout] test src/lib.rs - ChainError<T>::find_cause (line 160) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.52s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b99f76fc6a3f93353f2afb1ffd6021a8b6911d1c20d561e6e493a77b144cbe59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b99f76fc6a3f93353f2afb1ffd6021a8b6911d1c20d561e6e493a77b144cbe59", kill_on_drop: false }`
[INFO] [stdout] b99f76fc6a3f93353f2afb1ffd6021a8b6911d1c20d561e6e493a77b144cbe59