[INFO] updating cached repository dyashkir/rust_hello
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dyashkir/rust_hello
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dyashkir/rust_hello" "work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dyashkir/rust_hello" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dyashkir/rust_hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dyashkir/rust_hello'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4ff966a917d2ec904e767dfaf965ff89d6fd86b8
[INFO] sha for GitHub repo dyashkir/rust_hello: 4ff966a917d2ec904e767dfaf965ff89d6fd86b8
[INFO] validating manifest of dyashkir/rust_hello 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 dyashkir/rust_hello 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 dyashkir/rust_hello
[INFO] finished frobbing dyashkir/rust_hello
[INFO] frobbed toml for dyashkir/rust_hello written to work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello/Cargo.toml
[INFO] started frobbing dyashkir/rust_hello
[INFO] finished frobbing dyashkir/rust_hello
[INFO] frobbed toml for dyashkir/rust_hello written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dyashkir/rust_hello/Cargo.toml
[INFO] crate dyashkir/rust_hello 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 dyashkir/rust_hello 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello:/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] ed0c47cb8129d772fb2a388d1f47d4df1802585134909b00225a87ede3318358
[INFO] running `"docker" "start" "-a" "ed0c47cb8129d772fb2a388d1f47d4df1802585134909b00225a87ede3318358"`
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `v` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let mut v = vec![0.0; 1000];
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_v` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]   --> src/main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         v = record.unwrap();
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `"docker" "inspect" "ed0c47cb8129d772fb2a388d1f47d4df1802585134909b00225a87ede3318358"`
[INFO] running `"docker" "rm" "-f" "ed0c47cb8129d772fb2a388d1f47d4df1802585134909b00225a87ede3318358"`
[INFO] [stdout] ed0c47cb8129d772fb2a388d1f47d4df1802585134909b00225a87ede3318358
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello:/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] db101273e62026395bebc2e96376e16b52c96468aa372d8359f3a4d6b1bf6794
[INFO] running `"docker" "start" "-a" "db101273e62026395bebc2e96376e16b52c96468aa372d8359f3a4d6b1bf6794"`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `v` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let mut v = vec![0.0; 1000];
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_v` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]   --> src/main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         v = record.unwrap();
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "db101273e62026395bebc2e96376e16b52c96468aa372d8359f3a4d6b1bf6794"`
[INFO] running `"docker" "rm" "-f" "db101273e62026395bebc2e96376e16b52c96468aa372d8359f3a4d6b1bf6794"`
[INFO] [stdout] db101273e62026395bebc2e96376e16b52c96468aa372d8359f3a4d6b1bf6794
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dyashkir/rust_hello:/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] 1646ac635d4e08bb64d74685c011d0896ac64e24d3de6f967a3e767374304200
[INFO] running `"docker" "start" "-a" "1646ac635d4e08bb64d74685c011d0896ac64e24d3de6f967a3e767374304200"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello_world-2431ab4161fc2095
[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" "1646ac635d4e08bb64d74685c011d0896ac64e24d3de6f967a3e767374304200"`
[INFO] running `"docker" "rm" "-f" "1646ac635d4e08bb64d74685c011d0896ac64e24d3de6f967a3e767374304200"`
[INFO] [stdout] 1646ac635d4e08bb64d74685c011d0896ac64e24d3de6f967a3e767374304200