[INFO] crate funfun 0.2.4 is already in cache
[INFO] extracting crate funfun 0.2.4 into work/ex/beta-1.37-6/sources/1.36.0/reg/funfun/0.2.4
[INFO] extracting crate funfun 0.2.4 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/funfun/0.2.4
[INFO] validating manifest of funfun-0.2.4 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of funfun-0.2.4 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing funfun-0.2.4
[INFO] finished frobbing funfun-0.2.4
[INFO] frobbed toml for funfun-0.2.4 written to work/ex/beta-1.37-6/sources/1.36.0/reg/funfun/0.2.4/Cargo.toml
[INFO] started frobbing funfun-0.2.4
[INFO] finished frobbing funfun-0.2.4
[INFO] frobbed toml for funfun-0.2.4 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/funfun/0.2.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing funfun-0.2.4 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/funfun/0.2.4:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 736b92640cfca8d907c72ce541ee99aa275a22d5a7830520f84c07d21e173a23
[INFO] running `"docker" "start" "-a" "736b92640cfca8d907c72ce541ee99aa275a22d5a7830520f84c07d21e173a23"`
[INFO] [stderr]    Compiling funfun v0.2.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `"docker" "inspect" "736b92640cfca8d907c72ce541ee99aa275a22d5a7830520f84c07d21e173a23"`
[INFO] running `"docker" "rm" "-f" "736b92640cfca8d907c72ce541ee99aa275a22d5a7830520f84c07d21e173a23"`
[INFO] [stdout] 736b92640cfca8d907c72ce541ee99aa275a22d5a7830520f84c07d21e173a23
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/funfun/0.2.4:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8d36e0e729a854b15e605594dc07f49690379bee8bd60b0090ff50085e20c537
[INFO] running `"docker" "start" "-a" "8d36e0e729a854b15e605594dc07f49690379bee8bd60b0090ff50085e20c537"`
[INFO] [stderr]    Compiling funfun v0.2.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/lib.rs:104:14
[INFO] [stderr]     |
[INFO] [stderr] 104 |             |d: &str| -> String {"reassign once".to_string()}
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/lib.rs:127:14
[INFO] [stderr]     |
[INFO] [stderr] 127 |             |d: &str| -> String {"reassign once".to_string()}
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |             res.join();
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |             res.join();
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "8d36e0e729a854b15e605594dc07f49690379bee8bd60b0090ff50085e20c537"`
[INFO] running `"docker" "rm" "-f" "8d36e0e729a854b15e605594dc07f49690379bee8bd60b0090ff50085e20c537"`
[INFO] [stdout] 8d36e0e729a854b15e605594dc07f49690379bee8bd60b0090ff50085e20c537
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/funfun/0.2.4:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 96699a2109b35acfbc5503d0b5b7db2d7252832d8f053dcc34c4daac86a03a75
[INFO] running `"docker" "start" "-a" "96699a2109b35acfbc5503d0b5b7db2d7252832d8f053dcc34c4daac86a03a75"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/funfun-f1e8e354a05e3562
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::in_struct_arc_fn ... ok
[INFO] [stdout] test tests::in_struct_box_fn ... ok
[INFO] [stdout] test tests::one_arity_box_fn ... ok
[INFO] [stdout] test tests::pass_function_box_fn ... ok
[INFO] [stdout] test tests::pass_named_box_fn ... ok
[INFO] [stdout] test tests::zero_arity_box_fn ... ok
[INFO] [stdout] test tests::multithreading_box_fn ... ok
[INFO] [stdout] accepts closures to run in their own thread!
[INFO] [stdout] test tests::multithreading_spawn_fn ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests funfun
[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" "96699a2109b35acfbc5503d0b5b7db2d7252832d8f053dcc34c4daac86a03a75"`
[INFO] running `"docker" "rm" "-f" "96699a2109b35acfbc5503d0b5b7db2d7252832d8f053dcc34c4daac86a03a75"`
[INFO] [stdout] 96699a2109b35acfbc5503d0b5b7db2d7252832d8f053dcc34c4daac86a03a75