[INFO] crate handletree-rs 0.2.0 is already in cache
[INFO] extracting crate handletree-rs 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/handletree-rs/0.2.0
[INFO] extracting crate handletree-rs 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/handletree-rs/0.2.0
[INFO] validating manifest of handletree-rs-0.2.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of handletree-rs-0.2.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing handletree-rs-0.2.0
[INFO] finished frobbing handletree-rs-0.2.0
[INFO] frobbed toml for handletree-rs-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/handletree-rs/0.2.0/Cargo.toml
[INFO] started frobbing handletree-rs-0.2.0
[INFO] finished frobbing handletree-rs-0.2.0
[INFO] frobbed toml for handletree-rs-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/handletree-rs/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing handletree-rs-0.2.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/handletree-rs/0.2.0:/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=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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] fb34483292ed1bf7cb174a0dac5baa130dcf891929aa3545ffe1f2376944746b
[INFO] running `"docker" "start" "-a" "fb34483292ed1bf7cb174a0dac5baa130dcf891929aa3545ffe1f2376944746b"`
[INFO] [stderr]    Compiling handletree-rs v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:133:25
[INFO] [stderr]     |
[INFO] [stderr] 133 |                     let mut jambojuice = &mut self.freed[..];
[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 0.46s
[INFO] running `"docker" "inspect" "fb34483292ed1bf7cb174a0dac5baa130dcf891929aa3545ffe1f2376944746b"`
[INFO] running `"docker" "rm" "-f" "fb34483292ed1bf7cb174a0dac5baa130dcf891929aa3545ffe1f2376944746b"`
[INFO] [stdout] fb34483292ed1bf7cb174a0dac5baa130dcf891929aa3545ffe1f2376944746b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/handletree-rs/0.2.0:/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=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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8451a4b7f35f7c361b1a7695c0d6f14a7778eefb54a951caddb058fec63a81c8
[INFO] running `"docker" "start" "-a" "8451a4b7f35f7c361b1a7695c0d6f14a7778eefb54a951caddb058fec63a81c8"`
[INFO] [stderr]    Compiling handletree-rs v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:133:25
[INFO] [stderr]     |
[INFO] [stderr] 133 |                     let mut jambojuice = &mut self.freed[..];
[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 0.79s
[INFO] running `"docker" "inspect" "8451a4b7f35f7c361b1a7695c0d6f14a7778eefb54a951caddb058fec63a81c8"`
[INFO] running `"docker" "rm" "-f" "8451a4b7f35f7c361b1a7695c0d6f14a7778eefb54a951caddb058fec63a81c8"`
[INFO] [stdout] 8451a4b7f35f7c361b1a7695c0d6f14a7778eefb54a951caddb058fec63a81c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/handletree-rs/0.2.0:/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=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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] f9c51262663bed96ce798407b911bc3a70d87066004e9a93f0ae079e7456b945
[INFO] running `"docker" "start" "-a" "f9c51262663bed96ce798407b911bc3a70d87066004e9a93f0ae079e7456b945"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/handlemanager-4a040d30fe4c6e1e
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::simplest_use ... ok
[INFO] [stdout] test test::double_free ... ok
[INFO] [stdout] test test::basic_recycling ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests handlemanager
[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" "f9c51262663bed96ce798407b911bc3a70d87066004e9a93f0ae079e7456b945"`
[INFO] running `"docker" "rm" "-f" "f9c51262663bed96ce798407b911bc3a70d87066004e9a93f0ae079e7456b945"`
[INFO] [stdout] f9c51262663bed96ce798407b911bc3a70d87066004e9a93f0ae079e7456b945