[INFO] updating cached repository taku-n/close
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/taku-n/close
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/taku-n/close" "work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/taku-n/close" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/taku-n/close"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/taku-n/close'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 594dc065e9f1fb77a8af1230059b04e6ebccf876
[INFO] sha for GitHub repo taku-n/close: 594dc065e9f1fb77a8af1230059b04e6ebccf876
[INFO] validating manifest of taku-n/close 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 taku-n/close 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 taku-n/close
[INFO] finished frobbing taku-n/close
[INFO] frobbed toml for taku-n/close written to work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close/Cargo.toml
[INFO] started frobbing taku-n/close
[INFO] finished frobbing taku-n/close
[INFO] frobbed toml for taku-n/close written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/taku-n/close/Cargo.toml
[INFO] crate taku-n/close 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 taku-n/close 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close:/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] 5c676c1580f2f3580cfd287fb8e1dc5abaad8e473f4d7e460375f04b460292d4
[INFO] running `"docker" "start" "-a" "5c676c1580f2f3580cfd287fb8e1dc5abaad8e473f4d7e460375f04b460292d4"`
[INFO] [stderr]    Compiling close v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/dbg.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Err(e) => {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `i32`
[INFO] [stderr]   --> src/dbg.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn i32(x: i32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `f64`
[INFO] [stderr]   --> src/dbg.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn f64(x: f64) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `s_i32`
[INFO] [stderr]   --> src/dbg.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn s_i32(s: &[i32]) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dbg.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stream.write(s.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "5c676c1580f2f3580cfd287fb8e1dc5abaad8e473f4d7e460375f04b460292d4"`
[INFO] running `"docker" "rm" "-f" "5c676c1580f2f3580cfd287fb8e1dc5abaad8e473f4d7e460375f04b460292d4"`
[INFO] [stdout] 5c676c1580f2f3580cfd287fb8e1dc5abaad8e473f4d7e460375f04b460292d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close:/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] 57dd0a9e2ec3601877d3511b98e54223a4578674b914c5b3b6680767abb4c338
[INFO] running `"docker" "start" "-a" "57dd0a9e2ec3601877d3511b98e54223a4578674b914c5b3b6680767abb4c338"`
[INFO] [stderr]    Compiling close v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/dbg.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Err(e) => {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `i32`
[INFO] [stderr]   --> src/dbg.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn i32(x: i32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `f64`
[INFO] [stderr]   --> src/dbg.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn f64(x: f64) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `s_i32`
[INFO] [stderr]   --> src/dbg.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn s_i32(s: &[i32]) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dbg.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stream.write(s.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "57dd0a9e2ec3601877d3511b98e54223a4578674b914c5b3b6680767abb4c338"`
[INFO] running `"docker" "rm" "-f" "57dd0a9e2ec3601877d3511b98e54223a4578674b914c5b3b6680767abb4c338"`
[INFO] [stdout] 57dd0a9e2ec3601877d3511b98e54223a4578674b914c5b3b6680767abb4c338
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/taku-n/close:/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] 29a7f65f8f2533045aa8d63e70237c5dabca4a36d1cd6c9f9e0b2ca765970d75
[INFO] running `"docker" "start" "-a" "29a7f65f8f2533045aa8d63e70237c5dabca4a36d1cd6c9f9e0b2ca765970d75"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/close-17bce0ed34c13e43
[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" "29a7f65f8f2533045aa8d63e70237c5dabca4a36d1cd6c9f9e0b2ca765970d75"`
[INFO] running `"docker" "rm" "-f" "29a7f65f8f2533045aa8d63e70237c5dabca4a36d1cd6c9f9e0b2ca765970d75"`
[INFO] [stdout] 29a7f65f8f2533045aa8d63e70237c5dabca4a36d1cd6c9f9e0b2ca765970d75