[INFO] updating cached repository burnt43/simple_rust_webserver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/burnt43/simple_rust_webserver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/burnt43/simple_rust_webserver" "work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/burnt43/simple_rust_webserver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burnt43/simple_rust_webserver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burnt43/simple_rust_webserver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed0bd650742717041ac457be0415c45966f599ab
[INFO] sha for GitHub repo burnt43/simple_rust_webserver: ed0bd650742717041ac457be0415c45966f599ab
[INFO] validating manifest of burnt43/simple_rust_webserver 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 burnt43/simple_rust_webserver 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 burnt43/simple_rust_webserver
[INFO] finished frobbing burnt43/simple_rust_webserver
[INFO] frobbed toml for burnt43/simple_rust_webserver written to work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver/Cargo.toml
[INFO] started frobbing burnt43/simple_rust_webserver
[INFO] finished frobbing burnt43/simple_rust_webserver
[INFO] frobbed toml for burnt43/simple_rust_webserver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burnt43/simple_rust_webserver/Cargo.toml
[INFO] crate burnt43/simple_rust_webserver 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing burnt43/simple_rust_webserver 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver:/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] 6325313a71368812a8e6dcd9b0ea82d528c73d4f64c743174b4a2bf88cd33750
[INFO] running `"docker" "start" "-a" "6325313a71368812a8e6dcd9b0ea82d528c73d4f64c743174b4a2bf88cd33750"`
[INFO] [stderr]    Compiling simple_rust_webserver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `http_version`
[INFO] [stderr]    --> src/main.rs:178:37
[INFO] [stderr]     |
[INFO] [stderr] 178 |             ( Some(http_verb), Some(http_version), Some(request_path) ) => {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_http_version`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `http_options`
[INFO] [stderr]   --> src/main.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn http_options (&mut self, pair: (HttpOption,String)) -> &mut HttpResponseBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "6325313a71368812a8e6dcd9b0ea82d528c73d4f64c743174b4a2bf88cd33750"`
[INFO] running `"docker" "rm" "-f" "6325313a71368812a8e6dcd9b0ea82d528c73d4f64c743174b4a2bf88cd33750"`
[INFO] [stdout] 6325313a71368812a8e6dcd9b0ea82d528c73d4f64c743174b4a2bf88cd33750
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver:/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] cb1ff9f02b7f75406609d6aa818df12e88b9005c5d94fe3d01ce4f4290c94e21
[INFO] running `"docker" "start" "-a" "cb1ff9f02b7f75406609d6aa818df12e88b9005c5d94fe3d01ce4f4290c94e21"`
[INFO] [stderr]    Compiling simple_rust_webserver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `http_version`
[INFO] [stderr]    --> src/main.rs:178:37
[INFO] [stderr]     |
[INFO] [stderr] 178 |             ( Some(http_verb), Some(http_version), Some(request_path) ) => {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_http_version`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `http_options`
[INFO] [stderr]   --> src/main.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn http_options (&mut self, pair: (HttpOption,String)) -> &mut HttpResponseBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "cb1ff9f02b7f75406609d6aa818df12e88b9005c5d94fe3d01ce4f4290c94e21"`
[INFO] running `"docker" "rm" "-f" "cb1ff9f02b7f75406609d6aa818df12e88b9005c5d94fe3d01ce4f4290c94e21"`
[INFO] [stdout] cb1ff9f02b7f75406609d6aa818df12e88b9005c5d94fe3d01ce4f4290c94e21
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burnt43/simple_rust_webserver:/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] be0e958b29a8d0e88e83d41ba02c63422a070d33cea7faeb6bf99b0a32a7373c
[INFO] running `"docker" "start" "-a" "be0e958b29a8d0e88e83d41ba02c63422a070d33cea7faeb6bf99b0a32a7373c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_rust_webserver-fa161bbf304168ab
[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" "be0e958b29a8d0e88e83d41ba02c63422a070d33cea7faeb6bf99b0a32a7373c"`
[INFO] running `"docker" "rm" "-f" "be0e958b29a8d0e88e83d41ba02c63422a070d33cea7faeb6bf99b0a32a7373c"`
[INFO] [stdout] be0e958b29a8d0e88e83d41ba02c63422a070d33cea7faeb6bf99b0a32a7373c