[INFO] crate tasks-framework 0.1.0 is already in cache
[INFO] extracting crate tasks-framework 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/tasks-framework/0.1.0
[INFO] extracting crate tasks-framework 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tasks-framework/0.1.0
[INFO] validating manifest of tasks-framework-0.1.0 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 tasks-framework-0.1.0 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 tasks-framework-0.1.0
[INFO] finished frobbing tasks-framework-0.1.0
[INFO] frobbed toml for tasks-framework-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tasks-framework/0.1.0/Cargo.toml
[INFO] started frobbing tasks-framework-0.1.0
[INFO] finished frobbing tasks-framework-0.1.0
[INFO] frobbed toml for tasks-framework-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tasks-framework/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] building tasks-framework-0.1.0 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tasks-framework/0.1.0:/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] 9da7f8cba368dec416b301e1e4f22c460ad14c58e981dc259947d528fd660f9a
[INFO] running `"docker" "start" "-a" "9da7f8cba368dec416b301e1e4f22c460ad14c58e981dc259947d528fd660f9a"`
[INFO] [stderr]    Compiling lock-free-stack v0.1.1
[INFO] [stderr]    Compiling tasks-framework v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "9da7f8cba368dec416b301e1e4f22c460ad14c58e981dc259947d528fd660f9a"`
[INFO] running `"docker" "rm" "-f" "9da7f8cba368dec416b301e1e4f22c460ad14c58e981dc259947d528fd660f9a"`
[INFO] [stdout] 9da7f8cba368dec416b301e1e4f22c460ad14c58e981dc259947d528fd660f9a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tasks-framework/0.1.0:/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] 295b1a0f78f284a9f10634813fc6d70bc03471b8ee29f0ba78d1442249ccfe66
[INFO] running `"docker" "start" "-a" "295b1a0f78f284a9f10634813fc6d70bc03471b8ee29f0ba78d1442249ccfe66"`
[INFO] [stderr]    Compiling tasks-framework v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> tests/tasks.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for i in 0 .. 10 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `"docker" "inspect" "295b1a0f78f284a9f10634813fc6d70bc03471b8ee29f0ba78d1442249ccfe66"`
[INFO] running `"docker" "rm" "-f" "295b1a0f78f284a9f10634813fc6d70bc03471b8ee29f0ba78d1442249ccfe66"`
[INFO] [stdout] 295b1a0f78f284a9f10634813fc6d70bc03471b8ee29f0ba78d1442249ccfe66