[INFO] crate veb-rs 0.1.1 is already in cache
[INFO] testing veb-rs-0.1.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate veb-rs 0.1.1 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate veb-rs 0.1.1 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate veb-rs 0.1.1
[INFO] finished tweaking crates.io crate veb-rs 0.1.1
[INFO] tweaked toml for crates.io crate veb-rs 0.1.1 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 7a31e0e6dca3ce9583bdb14831f6f5e74080a2c8efb327e72387957a37455d93
[INFO] running `"docker" "start" "-a" "7a31e0e6dca3ce9583bdb14831f6f5e74080a2c8efb327e72387957a37455d93"`
[INFO] [stderr]    Compiling veb-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:254:21
[INFO] [stderr]     |
[INFO] [stderr] 254 |                 let mut subtree = &mut self.children[idx as usize];
[INFO] [stderr]     |                     ----^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `"docker" "inspect" "7a31e0e6dca3ce9583bdb14831f6f5e74080a2c8efb327e72387957a37455d93"`
[INFO] running `"docker" "rm" "-f" "7a31e0e6dca3ce9583bdb14831f6f5e74080a2c8efb327e72387957a37455d93"`
[INFO] [stdout] 7a31e0e6dca3ce9583bdb14831f6f5e74080a2c8efb327e72387957a37455d93
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] e53fb278081a79be4144fefd9e43ecdb3318d5d35f6103d6f460d15933be264e
[INFO] running `"docker" "start" "-a" "e53fb278081a79be4144fefd9e43ecdb3318d5d35f6103d6f460d15933be264e"`
[INFO] [stderr]    Compiling veb-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:254:21
[INFO] [stderr]     |
[INFO] [stderr] 254 |                 let mut subtree = &mut self.children[idx as usize];
[INFO] [stderr]     |                     ----^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "e53fb278081a79be4144fefd9e43ecdb3318d5d35f6103d6f460d15933be264e"`
[INFO] running `"docker" "rm" "-f" "e53fb278081a79be4144fefd9e43ecdb3318d5d35f6103d6f460d15933be264e"`
[INFO] [stdout] e53fb278081a79be4144fefd9e43ecdb3318d5d35f6103d6f460d15933be264e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] d67645e784dd82aac8d7d3d2ab4021e80a86d85684feab8a9a1699e8b0ffba17
[INFO] running `"docker" "start" "-a" "d67645e784dd82aac8d7d3d2ab4021e80a86d85684feab8a9a1699e8b0ffba17"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/veb_rs-995b9d21f8e9806a
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test creation_fail ... ok
[INFO] [stdout] test find_next ... ok
[INFO] [stdout] test insertion_and_has ... ok
[INFO] [stdout] test creation ... ok
[INFO] [stdout] test delete ... ok
[INFO] [stdout] test is_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests veb-rs
[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" "d67645e784dd82aac8d7d3d2ab4021e80a86d85684feab8a9a1699e8b0ffba17"`
[INFO] running `"docker" "rm" "-f" "d67645e784dd82aac8d7d3d2ab4021e80a86d85684feab8a9a1699e8b0ffba17"`
[INFO] [stdout] d67645e784dd82aac8d7d3d2ab4021e80a86d85684feab8a9a1699e8b0ffba17