[INFO] fetching crate bf 0.4.8...
[INFO] testing bf-0.4.8 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bf 0.4.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bf 0.4.8 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bf 0.4.8
[INFO] finished tweaking crates.io crate bf 0.4.8
[INFO] tweaked toml for crates.io crate bf 0.4.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc5f271e2f09778f5eef5e8c24e5854c1225bbf24b5533ffe7af8eb1b1b1b3ac
[INFO] running `Command { std: "docker" "start" "-a" "fc5f271e2f09778f5eef5e8c24e5854c1225bbf24b5533ffe7af8eb1b1b1b3ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc5f271e2f09778f5eef5e8c24e5854c1225bbf24b5533ffe7af8eb1b1b1b3ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5f271e2f09778f5eef5e8c24e5854c1225bbf24b5533ffe7af8eb1b1b1b3ac", kill_on_drop: false }`
[INFO] [stdout] fc5f271e2f09778f5eef5e8c24e5854c1225bbf24b5533ffe7af8eb1b1b1b3ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d9b80a5a1a97573bc38cd2593288c638a3623790898534fa0898b8b0f47e619
[INFO] running `Command { std: "docker" "start" "-a" "0d9b80a5a1a97573bc38cd2593288c638a3623790898534fa0898b8b0f47e619", kill_on_drop: false }`
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling bf v0.4.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rts.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |     input:  &'a mut Read,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rts.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |     output: &'a mut Write,
[INFO] [stdout]    |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.34s
[INFO] running `Command { std: "docker" "inspect" "0d9b80a5a1a97573bc38cd2593288c638a3623790898534fa0898b8b0f47e619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d9b80a5a1a97573bc38cd2593288c638a3623790898534fa0898b8b0f47e619", kill_on_drop: false }`
[INFO] [stdout] 0d9b80a5a1a97573bc38cd2593288c638a3623790898534fa0898b8b0f47e619
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b533a6d2cf194996fea3fa517dff05a398f57510d90a7c8b2bc33a2eb772d42
[INFO] running `Command { std: "docker" "start" "-a" "4b533a6d2cf194996fea3fa517dff05a398f57510d90a7c8b2bc33a2eb772d42", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rts.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |     input:  &'a mut Read,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bf v0.4.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rts.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |     output: &'a mut Write,
[INFO] [stdout]    |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/rts.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |     input:  &'a mut Read,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rts.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |     output: &'a mut Write,
[INFO] [stdout]    |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parse_program` is imported redundantly
[INFO] [stdout]    --> src/ast/interpreter.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 59  |     use super::*;
[INFO] [stdout]     |         -------- the item `parse_program` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 109 |         use super::super::parser::parse_program;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "4b533a6d2cf194996fea3fa517dff05a398f57510d90a7c8b2bc33a2eb772d42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b533a6d2cf194996fea3fa517dff05a398f57510d90a7c8b2bc33a2eb772d42", kill_on_drop: false }`
[INFO] [stdout] 4b533a6d2cf194996fea3fa517dff05a398f57510d90a7c8b2bc33a2eb772d42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0aeb4e10f1c532f0313e482db6099de36df43532c3fc05f3b023964d225e066b
[INFO] running `Command { std: "docker" "start" "-a" "0aeb4e10f1c532f0313e482db6099de36df43532c3fc05f3b023964d225e066b", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rts.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |     input:  &'a mut Read,
[INFO] [stderr]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rts.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |     output: &'a mut Write,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: the item `parse_program` is imported redundantly
[INFO] [stderr]    --> src/ast/interpreter.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 59  |     use super::*;
[INFO] [stderr]     |         -------- the item `parse_program` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 109 |         use super::super::parser::parse_program;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `bf` (lib) generated 2 warnings
[INFO] [stderr] warning: `bf` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bf-39e42e5f99f109ae)
[INFO] [stdout] 
[INFO] [stdout] running 38 tests
[INFO] [stdout] test ast::parser::tests::all_comment_program_parses ... ok
[INFO] [stdout] test ast::parser::tests::comment_is_ignored ... ok
[INFO] [stdout] test ast::parser::tests::empty_loop_parses ... ok
[INFO] [stdout] test ast::parser::tests::empty_program_parses ... ok
[INFO] [stdout] test ast::parser::tests::left_bracket_without_right_is_error ... ok
[INFO] [stdout] test ast::parser::tests::multiple_instructions_parse ... ok
[INFO] [stdout] test ast::interpreter::tests::assert_no_output ... ok
[INFO] [stdout] test ast::parser::tests::nested_loops_parse ... ok
[INFO] [stdout] test ast::parser::tests::non_empty_loop_parses ... ok
[INFO] [stdout] test ast::parser::tests::right_bracket_without_left_is_error ... ok
[INFO] [stdout] test ast::interpreter::tests::assert_output_0 ... ok
[INFO] [stdout] test ast::interpreter::tests::assert_output_1 ... ok
[INFO] [stdout] test ast::interpreter::tests::hello_world ... ok
[INFO] [stdout] test ast::interpreter::tests::assert_increment_input ... ok
[INFO] [stdout] test ast::parser::tests::single_byte_instructions_parse ... ok
[INFO] [stdout] test ast::parser::tests::trailing_comment_is_ignored ... ok
[INFO] [stdout] test rle::compiler::tests::loop_compiles ... ok
[INFO] [stdout] test rle::compiler::tests::three_rights_compile ... ok
[INFO] [stdout] test rle::compiler::tests::right_compiles ... ok
[INFO] [stdout] test rle::compiler::tests::two_rights_two_ups_compile ... ok
[INFO] [stdout] test state::tests::down_goes_to_255 ... ok
[INFO] [stdout] test state::tests::load_reads ... ok
[INFO] [stdout] test state::tests::right_moves_right ... ok
[INFO] [stdout] test peephole::interpreter::tests::hello_world ... ok
[INFO] [stdout] test ast::interpreter::tests::assert_increment_loop ... ok
[INFO] [stdout] test state::tests::right_to_right_edge_is_okay ... ok
[INFO] [stdout] test state::tests::store_writes ... ok
[INFO] [stdout] test state::tests::right_then_left_restores ... ok
[INFO] [stdout] test bytecode::interpreter::tests::hello_world ... ok
[INFO] [stdout] test state::tests::longer_sequence_of_actions ... ok
[INFO] [stdout] test state::tests::up_goes_to_1 ... ok
[INFO] [stdout] test rle::interpreter::tests::hello_world ... ok
[INFO] [stdout] test state::tests::right_past_edge_is_error - should panic ... ok
[INFO] [stdout] test state::tests::move_left_is_error - should panic ... ok
[INFO] [stdout] test bytecode::interpreter::tests::factoring ... ok
[INFO] [stdout] test peephole::interpreter::tests::factoring ... ok
[INFO] [stdout] test rle::interpreter::tests::factoring ... ok
[INFO] [stdout] test ast::interpreter::tests::factoring ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 38 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bfi-a43bc79bc9126a0a)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bf
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0aeb4e10f1c532f0313e482db6099de36df43532c3fc05f3b023964d225e066b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aeb4e10f1c532f0313e482db6099de36df43532c3fc05f3b023964d225e066b", kill_on_drop: false }`
[INFO] [stdout] 0aeb4e10f1c532f0313e482db6099de36df43532c3fc05f3b023964d225e066b