[INFO] fetching crate twiggy-opt 0.4.0...
[INFO] extracting crate twiggy-opt 0.4.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/twiggy-opt/0.4.0
[INFO] extracting crate twiggy-opt 0.4.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/twiggy-opt/0.4.0
[INFO] validating manifest of twiggy-opt-0.4.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of twiggy-opt-0.4.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing twiggy-opt-0.4.0
[INFO] finished frobbing twiggy-opt-0.4.0
[INFO] frobbed toml for twiggy-opt-0.4.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/twiggy-opt/0.4.0/Cargo.toml
[INFO] started frobbing twiggy-opt-0.4.0
[INFO] finished frobbing twiggy-opt-0.4.0
[INFO] frobbed toml for twiggy-opt-0.4.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/twiggy-opt/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing twiggy-opt-0.4.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/twiggy-opt/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 166e6d20ff37374e0f7c6d36aeda69a72c85d0fce47d8514e9c56d1b11f18279
[INFO] running `"docker" "start" "-a" "166e6d20ff37374e0f7c6d36aeda69a72c85d0fce47d8514e9c56d1b11f18279"`
[INFO] [stderr]    Compiling frozen v1.0.0
[INFO] [stderr]    Compiling cpp_demangle v0.2.12
[INFO] [stderr]    Compiling parity-wasm v0.35.7
[INFO] [stderr]    Compiling csv v1.0.7
[INFO] [stderr]    Compiling twiggy-opt v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling twiggy-ir v0.4.0
[INFO] [stderr]    Compiling twiggy-traits v0.4.0
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> opt.rs:240:46
[INFO] [stderr]     |
[INFO] [stderr] 240 |             pub fn open(&self) -> Result<Box<io::Write>, traits::Error> {
[INFO] [stderr]     |                                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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]    --> opt.rs:243:86
[INFO] [stderr]     |
[INFO] [stderr] 243 |                         Box::new(io::BufWriter::new(fs::File::create(path)?)) as Box<io::Write>
[INFO] [stderr]     |                                                                                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> opt.rs:245:80
[INFO] [stderr]     |
[INFO] [stderr] 245 |                     OutputDestination::Stdout => Box::new(io::stdout()) as Box<io::Write>,
[INFO] [stderr]     |                                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.66s
[INFO] running `"docker" "inspect" "166e6d20ff37374e0f7c6d36aeda69a72c85d0fce47d8514e9c56d1b11f18279"`
[INFO] running `"docker" "rm" "-f" "166e6d20ff37374e0f7c6d36aeda69a72c85d0fce47d8514e9c56d1b11f18279"`
[INFO] [stdout] 166e6d20ff37374e0f7c6d36aeda69a72c85d0fce47d8514e9c56d1b11f18279
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/twiggy-opt/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] cd97d44f618a7fdb525e48456de287003152132ab2eecba93998e02f0d5533d9
[INFO] running `"docker" "start" "-a" "cd97d44f618a7fdb525e48456de287003152132ab2eecba93998e02f0d5533d9"`
[INFO] [stderr]    Compiling twiggy-opt v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> opt.rs:240:46
[INFO] [stderr]     |
[INFO] [stderr] 240 |             pub fn open(&self) -> Result<Box<io::Write>, traits::Error> {
[INFO] [stderr]     |                                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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]    --> opt.rs:243:86
[INFO] [stderr]     |
[INFO] [stderr] 243 |                         Box::new(io::BufWriter::new(fs::File::create(path)?)) as Box<io::Write>
[INFO] [stderr]     |                                                                                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> opt.rs:245:80
[INFO] [stderr]     |
[INFO] [stderr] 245 |                     OutputDestination::Stdout => Box::new(io::stdout()) as Box<io::Write>,
[INFO] [stderr]     |                                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `"docker" "inspect" "cd97d44f618a7fdb525e48456de287003152132ab2eecba93998e02f0d5533d9"`
[INFO] running `"docker" "rm" "-f" "cd97d44f618a7fdb525e48456de287003152132ab2eecba93998e02f0d5533d9"`
[INFO] [stdout] cd97d44f618a7fdb525e48456de287003152132ab2eecba93998e02f0d5533d9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/twiggy-opt/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] da04dc9d12cadbe438508e949913c9a33adaefa30afc12e1be26d0bd54d82ca6
[INFO] running `"docker" "start" "-a" "da04dc9d12cadbe438508e949913c9a33adaefa30afc12e1be26d0bd54d82ca6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/twiggy_opt-75594267321e8ab7
[INFO] [stderr]    Doc-tests twiggy-opt
[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] [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 `"docker" "inspect" "da04dc9d12cadbe438508e949913c9a33adaefa30afc12e1be26d0bd54d82ca6"`
[INFO] running `"docker" "rm" "-f" "da04dc9d12cadbe438508e949913c9a33adaefa30afc12e1be26d0bd54d82ca6"`
[INFO] [stdout] da04dc9d12cadbe438508e949913c9a33adaefa30afc12e1be26d0bd54d82ca6