[INFO] updating cached repository slashlost-found/PoTsai
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/slashlost-found/PoTsai
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/slashlost-found/PoTsai" "work/ex/beta-1.38-1/sources/1.37.0/gh/slashlost-found/PoTsai"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/slashlost-found/PoTsai'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/slashlost-found/PoTsai" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf85e737aabe51179e31fb5a5410bd8879a5139c
[INFO] sha for GitHub repo slashlost-found/PoTsai: bf85e737aabe51179e31fb5a5410bd8879a5139c
[INFO] validating manifest of slashlost-found/PoTsai 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 slashlost-found/PoTsai 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 slashlost-found/PoTsai
[INFO] finished frobbing slashlost-found/PoTsai
[INFO] frobbed toml for slashlost-found/PoTsai written to work/ex/beta-1.38-1/sources/1.37.0/gh/slashlost-found/PoTsai/Cargo.toml
[INFO] started frobbing slashlost-found/PoTsai
[INFO] finished frobbing slashlost-found/PoTsai
[INFO] frobbed toml for slashlost-found/PoTsai written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai/Cargo.toml
[INFO] crate slashlost-found/PoTsai already has a lockfile, it will not be regenerated
[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 slashlost-found/PoTsai 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-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai:/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] da5e4ca6149cadf086827891fbddcf9d9d31e4337c388347fe489f0c6299ae1d
[INFO] running `"docker" "start" "-a" "da5e4ca6149cadf086827891fbddcf9d9d31e4337c388347fe489f0c6299ae1d"`
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio v0.1.19
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling potsai v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:70:7
[INFO] [stderr]    |
[INFO] [stderr] 70 |   let mut uri: String;
[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 26.71s
[INFO] running `"docker" "inspect" "da5e4ca6149cadf086827891fbddcf9d9d31e4337c388347fe489f0c6299ae1d"`
[INFO] running `"docker" "rm" "-f" "da5e4ca6149cadf086827891fbddcf9d9d31e4337c388347fe489f0c6299ae1d"`
[INFO] [stdout] da5e4ca6149cadf086827891fbddcf9d9d31e4337c388347fe489f0c6299ae1d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai:/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] 24a7c865af36c91f938bbfc219e73c5b7209ec7d238b4c4731c83a95fa5cd9fd
[INFO] running `"docker" "start" "-a" "24a7c865af36c91f938bbfc219e73c5b7209ec7d238b4c4731c83a95fa5cd9fd"`
[INFO] [stderr]    Compiling potsai v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:70:7
[INFO] [stderr]    |
[INFO] [stderr] 70 |   let mut uri: String;
[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 1.80s
[INFO] running `"docker" "inspect" "24a7c865af36c91f938bbfc219e73c5b7209ec7d238b4c4731c83a95fa5cd9fd"`
[INFO] running `"docker" "rm" "-f" "24a7c865af36c91f938bbfc219e73c5b7209ec7d238b4c4731c83a95fa5cd9fd"`
[INFO] [stdout] 24a7c865af36c91f938bbfc219e73c5b7209ec7d238b4c4731c83a95fa5cd9fd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slashlost-found/PoTsai:/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] e2cbf9a45bcbf6f5ed03f03793b8b9ac38669dd75a6d032a3ff2e387a60c5fb1
[INFO] running `"docker" "start" "-a" "e2cbf9a45bcbf6f5ed03f03793b8b9ac38669dd75a6d032a3ff2e387a60c5fb1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/potsai-320adf5192a1d3dd
[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" "e2cbf9a45bcbf6f5ed03f03793b8b9ac38669dd75a6d032a3ff2e387a60c5fb1"`
[INFO] running `"docker" "rm" "-f" "e2cbf9a45bcbf6f5ed03f03793b8b9ac38669dd75a6d032a3ff2e387a60c5fb1"`
[INFO] [stdout] e2cbf9a45bcbf6f5ed03f03793b8b9ac38669dd75a6d032a3ff2e387a60c5fb1