[INFO] crate immutable 0.1.1 is already in cache
[INFO] testing immutable-0.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate immutable 0.1.1 into work/builds/worker-5/source
[INFO] validating manifest of crates.io crate immutable 0.1.1 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate immutable 0.1.1
[INFO] finished tweaking crates.io crate immutable 0.1.1
[INFO] tweaked toml for crates.io crate immutable 0.1.1 written to work/builds/worker-5/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 9bab5313a21b13c23145184ba162e588f3503329bd08bfe3d13a5e3b876e4ca9
[INFO] running `"docker" "start" "-a" "9bab5313a21b13c23145184ba162e588f3503329bd08bfe3d13a5e3b876e4ca9"`
[INFO] [stderr]    Compiling immutable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::vec::IntoIter`
[INFO] [stderr]  --> src/list.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::vec::IntoIter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/list.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_escape]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> src/tree/binary_tree.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[macro_escape]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "9bab5313a21b13c23145184ba162e588f3503329bd08bfe3d13a5e3b876e4ca9"`
[INFO] running `"docker" "rm" "-f" "9bab5313a21b13c23145184ba162e588f3503329bd08bfe3d13a5e3b876e4ca9"`
[INFO] [stdout] 9bab5313a21b13c23145184ba162e588f3503329bd08bfe3d13a5e3b876e4ca9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] fa59fcb546d7ebd68d61b6deb86ffbe9e7640c1bdcb3c94bf59fdad7f458ed96
[INFO] running `"docker" "start" "-a" "fa59fcb546d7ebd68d61b6deb86ffbe9e7640c1bdcb3c94bf59fdad7f458ed96"`
[INFO] [stderr]    Compiling immutable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::vec::IntoIter`
[INFO] [stderr]  --> src/list.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::vec::IntoIter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/list.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_escape]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> src/tree/binary_tree.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[macro_escape]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "fa59fcb546d7ebd68d61b6deb86ffbe9e7640c1bdcb3c94bf59fdad7f458ed96"`
[INFO] running `"docker" "rm" "-f" "fa59fcb546d7ebd68d61b6deb86ffbe9e7640c1bdcb3c94bf59fdad7f458ed96"`
[INFO] [stdout] fa59fcb546d7ebd68d61b6deb86ffbe9e7640c1bdcb3c94bf59fdad7f458ed96
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 405bde16db8918399a0252c21c4efd84c00971158d44a2affa3871966688a6e2
[INFO] running `"docker" "start" "-a" "405bde16db8918399a0252c21c4efd84c00971158d44a2affa3871966688a6e2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/immutable-0ebe22849b118513
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test list::list_tail ... ok
[INFO] [stdout] test list::list_head ... ok
[INFO] [stdout] test map::map_macro ... ok
[INFO] [stdout] test list::list_append ... ok
[INFO] [stdout] test tree::binary_tree::test_height ... ok
[INFO] [stdout] test list::list_macro ... ok
[INFO] [stdout] test list::list_iterator ... ok
[INFO] [stdout] test tree::binary_tree::tree_iter ... ok
[INFO] [stdout] test tree::binary_tree::tree_macro ... ok
[INFO] [stdout] test tree::binary_tree::tree_balance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests immutable
[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" "405bde16db8918399a0252c21c4efd84c00971158d44a2affa3871966688a6e2"`
[INFO] running `"docker" "rm" "-f" "405bde16db8918399a0252c21c4efd84c00971158d44a2affa3871966688a6e2"`
[INFO] [stdout] 405bde16db8918399a0252c21c4efd84c00971158d44a2affa3871966688a6e2