[INFO] updating cached repository urhari05/rust-sandbox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/urhari05/rust-sandbox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/urhari05/rust-sandbox" "work/ex/beta-1.38-1/sources/1.37.0/gh/urhari05/rust-sandbox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/urhari05/rust-sandbox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/urhari05/rust-sandbox" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/urhari05/rust-sandbox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/urhari05/rust-sandbox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c194d60517d219260c5811e0ba7d98ed3efe6fc2
[INFO] sha for GitHub repo urhari05/rust-sandbox: c194d60517d219260c5811e0ba7d98ed3efe6fc2
[INFO] validating manifest of urhari05/rust-sandbox 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 urhari05/rust-sandbox 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 urhari05/rust-sandbox
[INFO] finished frobbing urhari05/rust-sandbox
[INFO] frobbed toml for urhari05/rust-sandbox written to work/ex/beta-1.38-1/sources/1.37.0/gh/urhari05/rust-sandbox/Cargo.toml
[INFO] started frobbing urhari05/rust-sandbox
[INFO] finished frobbing urhari05/rust-sandbox
[INFO] frobbed toml for urhari05/rust-sandbox written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/urhari05/rust-sandbox/Cargo.toml
[INFO] crate urhari05/rust-sandbox 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 urhari05/rust-sandbox 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-5/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/urhari05/rust-sandbox:/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] 2a6bac4193e91275e63c1812302d3d592695a03e840f0e4f236d4dae16b3cf46
[INFO] running `"docker" "start" "-a" "2a6bac4193e91275e63c1812302d3d592695a03e840f0e4f236d4dae16b3cf46"`
[INFO] [stderr]    Compiling rust-sandbox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `age` is never read
[INFO] [stderr]  --> src/vars.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut age = 36;
[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 0.74s
[INFO] running `"docker" "inspect" "2a6bac4193e91275e63c1812302d3d592695a03e840f0e4f236d4dae16b3cf46"`
[INFO] running `"docker" "rm" "-f" "2a6bac4193e91275e63c1812302d3d592695a03e840f0e4f236d4dae16b3cf46"`
[INFO] [stdout] 2a6bac4193e91275e63c1812302d3d592695a03e840f0e4f236d4dae16b3cf46
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/urhari05/rust-sandbox:/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] 5c37f04cc79e1678b1f59ab5f962f7187552e6346ce27b972d1e3425fb3ee474
[INFO] running `"docker" "start" "-a" "5c37f04cc79e1678b1f59ab5f962f7187552e6346ce27b972d1e3425fb3ee474"`
[INFO] [stderr]    Compiling rust-sandbox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `age` is never read
[INFO] [stderr]  --> src/vars.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut age = 36;
[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 0.68s
[INFO] running `"docker" "inspect" "5c37f04cc79e1678b1f59ab5f962f7187552e6346ce27b972d1e3425fb3ee474"`
[INFO] running `"docker" "rm" "-f" "5c37f04cc79e1678b1f59ab5f962f7187552e6346ce27b972d1e3425fb3ee474"`
[INFO] [stdout] 5c37f04cc79e1678b1f59ab5f962f7187552e6346ce27b972d1e3425fb3ee474
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/urhari05/rust-sandbox:/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] 705b0ee1c632715e5c0a7f0efc0ce6d71fecb6e81a5fb4f2c76a831f9f39f7cd
[INFO] running `"docker" "start" "-a" "705b0ee1c632715e5c0a7f0efc0ce6d71fecb6e81a5fb4f2c76a831f9f39f7cd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_sandbox-416ef8c8b2cd4d2b
[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" "705b0ee1c632715e5c0a7f0efc0ce6d71fecb6e81a5fb4f2c76a831f9f39f7cd"`
[INFO] running `"docker" "rm" "-f" "705b0ee1c632715e5c0a7f0efc0ce6d71fecb6e81a5fb4f2c76a831f9f39f7cd"`
[INFO] [stdout] 705b0ee1c632715e5c0a7f0efc0ce6d71fecb6e81a5fb4f2c76a831f9f39f7cd