[INFO] crate json_flex 0.3.2 is already in cache
[INFO] extracting crate json_flex 0.3.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/json_flex/0.3.2
[INFO] extracting crate json_flex 0.3.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/json_flex/0.3.2
[INFO] validating manifest of json_flex-0.3.2 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 json_flex-0.3.2 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 json_flex-0.3.2
[INFO] finished frobbing json_flex-0.3.2
[INFO] frobbed toml for json_flex-0.3.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/json_flex/0.3.2/Cargo.toml
[INFO] started frobbing json_flex-0.3.2
[INFO] finished frobbing json_flex-0.3.2
[INFO] frobbed toml for json_flex-0.3.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/json_flex/0.3.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing json_flex-0.3.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/json_flex/0.3.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] eaf9b71c6fd22b3d1c5edd1adec993bc79cb3ed6f253845dea768e376d4142c9
[INFO] running `"docker" "start" "-a" "eaf9b71c6fd22b3d1c5edd1adec993bc79cb3ed6f253845dea768e376d4142c9"`
[INFO] [stderr]    Compiling json_flex v0.3.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "eaf9b71c6fd22b3d1c5edd1adec993bc79cb3ed6f253845dea768e376d4142c9"`
[INFO] running `"docker" "rm" "-f" "eaf9b71c6fd22b3d1c5edd1adec993bc79cb3ed6f253845dea768e376d4142c9"`
[INFO] [stdout] eaf9b71c6fd22b3d1c5edd1adec993bc79cb3ed6f253845dea768e376d4142c9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/json_flex/0.3.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 05c76d0c6c85eb8d18111e21b31c500f7852006aeb203bdbea68961b0946b568
[INFO] running `"docker" "start" "-a" "05c76d0c6c85eb8d18111e21b31c500f7852006aeb203bdbea68961b0946b568"`
[INFO] [stderr]    Compiling json_flex v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/test.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::File;
[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/test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `"docker" "inspect" "05c76d0c6c85eb8d18111e21b31c500f7852006aeb203bdbea68961b0946b568"`
[INFO] running `"docker" "rm" "-f" "05c76d0c6c85eb8d18111e21b31c500f7852006aeb203bdbea68961b0946b568"`
[INFO] [stdout] 05c76d0c6c85eb8d18111e21b31c500f7852006aeb203bdbea68961b0946b568
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/json_flex/0.3.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 5f19ad65c479d7b106d5e280c4550c9f5a539cf9a1aaddbad00f79fa4c70bc08
[INFO] running `"docker" "start" "-a" "5f19ad65c479d7b106d5e280c4550c9f5a539cf9a1aaddbad00f79fa4c70bc08"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/json_flex-26934f9c233f654e
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::default ... ok
[INFO] [stderr]    Doc-tests json_flex
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "5f19ad65c479d7b106d5e280c4550c9f5a539cf9a1aaddbad00f79fa4c70bc08"`
[INFO] running `"docker" "rm" "-f" "5f19ad65c479d7b106d5e280c4550c9f5a539cf9a1aaddbad00f79fa4c70bc08"`
[INFO] [stdout] 5f19ad65c479d7b106d5e280c4550c9f5a539cf9a1aaddbad00f79fa4c70bc08