[INFO] crate parallel-getter 0.2.0 is already in cache
[INFO] extracting crate parallel-getter 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/parallel-getter/0.2.0
[INFO] extracting crate parallel-getter 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/parallel-getter/0.2.0
[INFO] validating manifest of parallel-getter-0.2.0 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 parallel-getter-0.2.0 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 parallel-getter-0.2.0
[INFO] finished frobbing parallel-getter-0.2.0
[INFO] frobbed toml for parallel-getter-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/parallel-getter/0.2.0/Cargo.toml
[INFO] started frobbing parallel-getter-0.2.0
[INFO] finished frobbing parallel-getter-0.2.0
[INFO] frobbed toml for parallel-getter-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/parallel-getter/0.2.0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded progress-streams v1.1.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing parallel-getter-0.2.0 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-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/parallel-getter/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 46f25811a043e31e90401c4873114b732662ae0298f344e05dcf3c284c76f02c
[INFO] running `"docker" "start" "-a" "46f25811a043e31e90401c4873114b732662ae0298f344e05dcf3c284c76f02c"`
[INFO] [stderr]    Compiling progress-streams v1.1.0
[INFO] [stderr]    Compiling numtoa v0.2.3
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling crossbeam-channel v0.2.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling crossbeam v0.4.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling reqwest v0.9.19
[INFO] [stderr]    Compiling parallel-getter v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:229:17
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let mut part: Box<dyn PartWriter> = match self.threshold_memory {
[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 31.05s
[INFO] running `"docker" "inspect" "46f25811a043e31e90401c4873114b732662ae0298f344e05dcf3c284c76f02c"`
[INFO] running `"docker" "rm" "-f" "46f25811a043e31e90401c4873114b732662ae0298f344e05dcf3c284c76f02c"`
[INFO] [stdout] 46f25811a043e31e90401c4873114b732662ae0298f344e05dcf3c284c76f02c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/parallel-getter/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 72748d7bf16574cc1723a910aa9bb52f4633a6f8ae9af504f14628bfe3d44ad2
[INFO] running `"docker" "start" "-a" "72748d7bf16574cc1723a910aa9bb52f4633a6f8ae9af504f14628bfe3d44ad2"`
[INFO] [stderr]    Compiling parallel-getter v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:229:17
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let mut part: Box<dyn PartWriter> = match self.threshold_memory {
[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 9.11s
[INFO] running `"docker" "inspect" "72748d7bf16574cc1723a910aa9bb52f4633a6f8ae9af504f14628bfe3d44ad2"`
[INFO] running `"docker" "rm" "-f" "72748d7bf16574cc1723a910aa9bb52f4633a6f8ae9af504f14628bfe3d44ad2"`
[INFO] [stdout] 72748d7bf16574cc1723a910aa9bb52f4633a6f8ae9af504f14628bfe3d44ad2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/parallel-getter/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 2a7ca906f744c5d4029d537ecc3b9ffc01ad58ddc38f20a599ca180b7b05b1d6
[INFO] running `"docker" "start" "-a" "2a7ca906f744c5d4029d537ecc3b9ffc01ad58ddc38f20a599ca180b7b05b1d6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/parallel_getter-e28db43d72840190
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test range::tests::parse_range_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests parallel-getter
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - ParallelGetter (line 69) ... ok
[INFO] [stdout] test src/lib.rs -  (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2a7ca906f744c5d4029d537ecc3b9ffc01ad58ddc38f20a599ca180b7b05b1d6"`
[INFO] running `"docker" "rm" "-f" "2a7ca906f744c5d4029d537ecc3b9ffc01ad58ddc38f20a599ca180b7b05b1d6"`
[INFO] [stdout] 2a7ca906f744c5d4029d537ecc3b9ffc01ad58ddc38f20a599ca180b7b05b1d6