[INFO] updating cached repository hamadakafu/rust_http_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hamadakafu/rust_http_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hamadakafu/rust_http_server" "work/ex/beta-1.38-1/sources/1.37.0/gh/hamadakafu/rust_http_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hamadakafu/rust_http_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hamadakafu/rust_http_server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hamadakafu/rust_http_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hamadakafu/rust_http_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 977bb89d40e94afa913e64a758671ad7edafc30d
[INFO] sha for GitHub repo hamadakafu/rust_http_server: 977bb89d40e94afa913e64a758671ad7edafc30d
[INFO] validating manifest of hamadakafu/rust_http_server 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 hamadakafu/rust_http_server 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 hamadakafu/rust_http_server
[INFO] finished frobbing hamadakafu/rust_http_server
[INFO] frobbed toml for hamadakafu/rust_http_server written to work/ex/beta-1.38-1/sources/1.37.0/gh/hamadakafu/rust_http_server/Cargo.toml
[INFO] started frobbing hamadakafu/rust_http_server
[INFO] finished frobbing hamadakafu/rust_http_server
[INFO] frobbed toml for hamadakafu/rust_http_server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hamadakafu/rust_http_server/Cargo.toml
[INFO] crate hamadakafu/rust_http_server 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 hamadakafu/rust_http_server 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-7/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/hamadakafu/rust_http_server:/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] 01e097bcc5e6cdb2bcf8c4827bdd352a54af0fd59d1ebb3f15ccff3061917ede
[INFO] running `"docker" "start" "-a" "01e097bcc5e6cdb2bcf8c4827bdd352a54af0fd59d1ebb3f15ccff3061917ede"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling rust_http_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Read`, `Write`, `self`
[INFO] [stderr]  --> src/lib.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 |     io::{self, BufRead, Read, Write},
[INFO] [stderr]   |          ^^^^           ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.39s
[INFO] running `"docker" "inspect" "01e097bcc5e6cdb2bcf8c4827bdd352a54af0fd59d1ebb3f15ccff3061917ede"`
[INFO] running `"docker" "rm" "-f" "01e097bcc5e6cdb2bcf8c4827bdd352a54af0fd59d1ebb3f15ccff3061917ede"`
[INFO] [stdout] 01e097bcc5e6cdb2bcf8c4827bdd352a54af0fd59d1ebb3f15ccff3061917ede
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/hamadakafu/rust_http_server:/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] 3ece68428ed01106f85797375cfef304db634cf89be600aa4de27c0e05ee7a85
[INFO] running `"docker" "start" "-a" "3ece68428ed01106f85797375cfef304db634cf89be600aa4de27c0e05ee7a85"`
[INFO] [stderr]    Compiling rust_http_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Read`, `Write`, `self`
[INFO] [stderr]  --> src/lib.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 |     io::{self, BufRead, Read, Write},
[INFO] [stderr]   |          ^^^^           ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "3ece68428ed01106f85797375cfef304db634cf89be600aa4de27c0e05ee7a85"`
[INFO] running `"docker" "rm" "-f" "3ece68428ed01106f85797375cfef304db634cf89be600aa4de27c0e05ee7a85"`
[INFO] [stdout] 3ece68428ed01106f85797375cfef304db634cf89be600aa4de27c0e05ee7a85
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/hamadakafu/rust_http_server:/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] 3ba95e95c73538fff040da3acb8d6e8d5f4b62b9ccc230bb11ac7f70f4dd4e3d
[INFO] running `"docker" "start" "-a" "3ba95e95c73538fff040da3acb8d6e8d5f4b62b9ccc230bb11ac7f70f4dd4e3d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_http_server-d21ab3be1ccf73f2
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_http_server-0b33ad5c8c1b0f9b
[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] [stderr]    Doc-tests rust_http_server
[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" "3ba95e95c73538fff040da3acb8d6e8d5f4b62b9ccc230bb11ac7f70f4dd4e3d"`
[INFO] running `"docker" "rm" "-f" "3ba95e95c73538fff040da3acb8d6e8d5f4b62b9ccc230bb11ac7f70f4dd4e3d"`
[INFO] [stdout] 3ba95e95c73538fff040da3acb8d6e8d5f4b62b9ccc230bb11ac7f70f4dd4e3d