[INFO] crate welder 0.3.0 is already in cache
[INFO] extracting crate welder 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/welder/0.3.0
[INFO] extracting crate welder 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/welder/0.3.0
[INFO] validating manifest of welder-0.3.0 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 welder-0.3.0 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 welder-0.3.0
[INFO] finished frobbing welder-0.3.0
[INFO] frobbed toml for welder-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/welder/0.3.0/Cargo.toml
[INFO] started frobbing welder-0.3.0
[INFO] finished frobbing welder-0.3.0
[INFO] frobbed toml for welder-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/welder/0.3.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing welder-0.3.0 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/reg/welder/0.3.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 1caa0ddf6a3d7e018779b6965b7e4ed9d841191c4325e2c275b1c1e9f06dab4a
[INFO] running `"docker" "start" "-a" "1caa0ddf6a3d7e018779b6965b7e4ed9d841191c4325e2c275b1c1e9f06dab4a"`
[INFO] [stderr]    Compiling welder v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `"docker" "inspect" "1caa0ddf6a3d7e018779b6965b7e4ed9d841191c4325e2c275b1c1e9f06dab4a"`
[INFO] running `"docker" "rm" "-f" "1caa0ddf6a3d7e018779b6965b7e4ed9d841191c4325e2c275b1c1e9f06dab4a"`
[INFO] [stdout] 1caa0ddf6a3d7e018779b6965b7e4ed9d841191c4325e2c275b1c1e9f06dab4a
[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/reg/welder/0.3.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1b526323d7785ab72e679f9a669d85051c041d65ed502a65076b047c58230cdb
[INFO] running `"docker" "start" "-a" "1b526323d7785ab72e679f9a669d85051c041d65ed502a65076b047c58230cdb"`
[INFO] [stderr]    Compiling welder v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "1b526323d7785ab72e679f9a669d85051c041d65ed502a65076b047c58230cdb"`
[INFO] running `"docker" "rm" "-f" "1b526323d7785ab72e679f9a669d85051c041d65ed502a65076b047c58230cdb"`
[INFO] [stdout] 1b526323d7785ab72e679f9a669d85051c041d65ed502a65076b047c58230cdb
[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/reg/welder/0.3.0:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 123fe2c140290263b5e3752108fcc1d5e4be76a7311777ee78adb70229e757e7
[INFO] running `"docker" "start" "-a" "123fe2c140290263b5e3752108fcc1d5e4be76a7311777ee78adb70229e757e7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/welder-cd8df6403590485a
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::string_welder_chain ... ok
[INFO] [stdout] test tests::string_welder_from_base ... ok
[INFO] [stdout] test tests::string_welder_multiple ... ok
[INFO] [stdout] test tests::string_welder ... ok
[INFO] [stdout] test tests::vec_welder_chain ... ok
[INFO] [stdout] test tests::vec_welder_multiple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests welder
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elem_glue_right (line 206) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elems (line 184) ... ok
[INFO] [stdout] test src/lib.rs -  (line 19) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elem_no_glue (line 107) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elem_glue_left (line 256) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elem (line 160) ... ok
[INFO] [stdout] test src/lib.rs -  (line 5) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elem_glue_both (line 305) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elems_glue_both (line 330) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elems_glue_right (line 230) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::new (line 45) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elems_glue_left (line 280) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::elems_no_glue (line 130) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::weld (line 88) ... ok
[INFO] [stdout] test src/lib.rs - Welder<G, T>::with_start (line 65) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "123fe2c140290263b5e3752108fcc1d5e4be76a7311777ee78adb70229e757e7"`
[INFO] running `"docker" "rm" "-f" "123fe2c140290263b5e3752108fcc1d5e4be76a7311777ee78adb70229e757e7"`
[INFO] [stdout] 123fe2c140290263b5e3752108fcc1d5e4be76a7311777ee78adb70229e757e7