[INFO] crate krpc-rs 0.3.1 is already in cache
[INFO] extracting crate krpc-rs 0.3.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/krpc-rs/0.3.1
[INFO] extracting crate krpc-rs 0.3.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/krpc-rs/0.3.1
[INFO] validating manifest of krpc-rs-0.3.1 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 krpc-rs-0.3.1 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 krpc-rs-0.3.1
[INFO] finished frobbing krpc-rs-0.3.1
[INFO] frobbed toml for krpc-rs-0.3.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/krpc-rs/0.3.1/Cargo.toml
[INFO] started frobbing krpc-rs-0.3.1
[INFO] finished frobbing krpc-rs-0.3.1
[INFO] frobbed toml for krpc-rs-0.3.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/krpc-rs/0.3.1/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing krpc-rs-0.3.1 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/krpc-rs/0.3.1:/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] 9fbf992502be45d6d919c8f865c6ca9d3cb0a918c59c5f32185bdfc516a1768e
[INFO] running `"docker" "start" "-a" "9fbf992502be45d6d919c8f865c6ca9d3cb0a918c59c5f32185bdfc516a1768e"`
[INFO] [stderr]    Compiling krpc-rs v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/stream.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut request : Request = make_request!(service, procedure, args);
[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 4.24s
[INFO] running `"docker" "inspect" "9fbf992502be45d6d919c8f865c6ca9d3cb0a918c59c5f32185bdfc516a1768e"`
[INFO] running `"docker" "rm" "-f" "9fbf992502be45d6d919c8f865c6ca9d3cb0a918c59c5f32185bdfc516a1768e"`
[INFO] [stdout] 9fbf992502be45d6d919c8f865c6ca9d3cb0a918c59c5f32185bdfc516a1768e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/krpc-rs/0.3.1:/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] d336d0a33a5052156fe8d3f3081ced706286b3f9125121ece7909343b931d609
[INFO] running `"docker" "start" "-a" "d336d0a33a5052156fe8d3f3081ced706286b3f9125121ece7909343b931d609"`
[INFO] [stderr]    Compiling krpc-rs v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/stream.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut request : Request = make_request!(service, procedure, args);
[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 1.36s
[INFO] running `"docker" "inspect" "d336d0a33a5052156fe8d3f3081ced706286b3f9125121ece7909343b931d609"`
[INFO] running `"docker" "rm" "-f" "d336d0a33a5052156fe8d3f3081ced706286b3f9125121ece7909343b931d609"`
[INFO] [stdout] d336d0a33a5052156fe8d3f3081ced706286b3f9125121ece7909343b931d609
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/krpc-rs/0.3.1:/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] eaf13f88e200d94f7d2fd2a738c40aafa3aa4b8536bbb1c38c743035de1a85af
[INFO] running `"docker" "start" "-a" "eaf13f88e200d94f7d2fd2a738c40aafa3aa4b8536bbb1c38c743035de1a85af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/krpc-f6beb42253dba9a9
[INFO] [stderr]    Doc-tests krpc
[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] [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" "eaf13f88e200d94f7d2fd2a738c40aafa3aa4b8536bbb1c38c743035de1a85af"`
[INFO] running `"docker" "rm" "-f" "eaf13f88e200d94f7d2fd2a738c40aafa3aa4b8536bbb1c38c743035de1a85af"`
[INFO] [stdout] eaf13f88e200d94f7d2fd2a738c40aafa3aa4b8536bbb1c38c743035de1a85af