[INFO] updating cached repository Tmplt/d7018e-assignment3
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Tmplt/d7018e-assignment3
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Tmplt/d7018e-assignment3" "work/ex/beta-1.37-6/sources/1.36.0/gh/Tmplt/d7018e-assignment3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Tmplt/d7018e-assignment3'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Tmplt/d7018e-assignment3" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 92eb630c6ba0be093107cea7c739824dfe819f43
[INFO] sha for GitHub repo Tmplt/d7018e-assignment3: 92eb630c6ba0be093107cea7c739824dfe819f43
[INFO] validating manifest of Tmplt/d7018e-assignment3 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Tmplt/d7018e-assignment3 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Tmplt/d7018e-assignment3
[INFO] finished frobbing Tmplt/d7018e-assignment3
[INFO] frobbed toml for Tmplt/d7018e-assignment3 written to work/ex/beta-1.37-6/sources/1.36.0/gh/Tmplt/d7018e-assignment3/Cargo.toml
[INFO] started frobbing Tmplt/d7018e-assignment3
[INFO] finished frobbing Tmplt/d7018e-assignment3
[INFO] frobbed toml for Tmplt/d7018e-assignment3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3/Cargo.toml
[INFO] crate Tmplt/d7018e-assignment3 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Tmplt/d7018e-assignment3 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] daa4b291d22e99285fe312de92abfb846f3d4a81a35f423348ce676736fe08ee
[INFO] running `"docker" "start" "-a" "daa4b291d22e99285fe312de92abfb846f3d4a81a35f423348ce676736fe08ee"`
[INFO] [stderr]    Compiling d7018e-assign3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `abc`
[INFO] [stderr]   --> src/main.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let abc: [u32; 4] = [
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_abc`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "daa4b291d22e99285fe312de92abfb846f3d4a81a35f423348ce676736fe08ee"`
[INFO] running `"docker" "rm" "-f" "daa4b291d22e99285fe312de92abfb846f3d4a81a35f423348ce676736fe08ee"`
[INFO] [stdout] daa4b291d22e99285fe312de92abfb846f3d4a81a35f423348ce676736fe08ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] dbfff6af79f9e15df1e4752c9801b68e69601e67475664466069fcf01f8bd8e7
[INFO] running `"docker" "start" "-a" "dbfff6af79f9e15df1e4752c9801b68e69601e67475664466069fcf01f8bd8e7"`
[INFO] [stderr]    Compiling d7018e-assign3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `abc`
[INFO] [stderr]   --> src/main.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let abc: [u32; 4] = [
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_abc`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "dbfff6af79f9e15df1e4752c9801b68e69601e67475664466069fcf01f8bd8e7"`
[INFO] running `"docker" "rm" "-f" "dbfff6af79f9e15df1e4752c9801b68e69601e67475664466069fcf01f8bd8e7"`
[INFO] [stdout] dbfff6af79f9e15df1e4752c9801b68e69601e67475664466069fcf01f8bd8e7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tmplt/d7018e-assignment3:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] ade15422a1126367f620f7c8fcbb3b8b071913a63adf74c16641969631b184d7
[INFO] running `"docker" "start" "-a" "ade15422a1126367f620f7c8fcbb3b8b071913a63adf74c16641969631b184d7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/d7018e_assign3-67f9a5024074f967
[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" "ade15422a1126367f620f7c8fcbb3b8b071913a63adf74c16641969631b184d7"`
[INFO] running `"docker" "rm" "-f" "ade15422a1126367f620f7c8fcbb3b8b071913a63adf74c16641969631b184d7"`
[INFO] [stdout] ade15422a1126367f620f7c8fcbb3b8b071913a63adf74c16641969631b184d7