[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 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 88b7c88b022b9ef939c326bc2e8ca5a7e3221a3e0e5c5383f1814bf0a760a7c2
[INFO] running `"docker" "start" "-a" "88b7c88b022b9ef939c326bc2e8ca5a7e3221a3e0e5c5383f1814bf0a760a7c2"`
[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 0.47s
[INFO] running `"docker" "inspect" "88b7c88b022b9ef939c326bc2e8ca5a7e3221a3e0e5c5383f1814bf0a760a7c2"`
[INFO] running `"docker" "rm" "-f" "88b7c88b022b9ef939c326bc2e8ca5a7e3221a3e0e5c5383f1814bf0a760a7c2"`
[INFO] [stdout] 88b7c88b022b9ef939c326bc2e8ca5a7e3221a3e0e5c5383f1814bf0a760a7c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b5f1a5f47d58f66a38e7c179b451b89da2ed7827527d7e507b181bedf7ae3759
[INFO] running `"docker" "start" "-a" "b5f1a5f47d58f66a38e7c179b451b89da2ed7827527d7e507b181bedf7ae3759"`
[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 0.75s
[INFO] running `"docker" "inspect" "b5f1a5f47d58f66a38e7c179b451b89da2ed7827527d7e507b181bedf7ae3759"`
[INFO] running `"docker" "rm" "-f" "b5f1a5f47d58f66a38e7c179b451b89da2ed7827527d7e507b181bedf7ae3759"`
[INFO] [stdout] b5f1a5f47d58f66a38e7c179b451b89da2ed7827527d7e507b181bedf7ae3759
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 9b25278d9b26f5c546434e6e2a3376c3d19d03808cc1e3b0474b21a0b1fe1e40
[INFO] running `"docker" "start" "-a" "9b25278d9b26f5c546434e6e2a3376c3d19d03808cc1e3b0474b21a0b1fe1e40"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/handlemanager-3a2dde6a989afe8a
[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" "9b25278d9b26f5c546434e6e2a3376c3d19d03808cc1e3b0474b21a0b1fe1e40"`
[INFO] running `"docker" "rm" "-f" "9b25278d9b26f5c546434e6e2a3376c3d19d03808cc1e3b0474b21a0b1fe1e40"`
[INFO] [stdout] 9b25278d9b26f5c546434e6e2a3376c3d19d03808cc1e3b0474b21a0b1fe1e40