[INFO] crate serde_with 1.3.1 is already in cache
[INFO] extracting crate serde_with 1.3.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/serde_with/1.3.1
[INFO] extracting crate serde_with 1.3.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_with/1.3.1
[INFO] validating manifest of serde_with-1.3.1 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 serde_with-1.3.1 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 serde_with-1.3.1
[INFO] finished frobbing serde_with-1.3.1
[INFO] frobbed toml for serde_with-1.3.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/serde_with/1.3.1/Cargo.toml
[INFO] started frobbing serde_with-1.3.1
[INFO] finished frobbing serde_with-1.3.1
[INFO] frobbed toml for serde_with-1.3.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_with/1.3.1/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] testing serde_with-1.3.1 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_with/1.3.1:/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] 3c9600af14b3c8748d661a4613d8020b3b8e3dd151945d148d1547749b4883f8
[INFO] running `"docker" "start" "-a" "3c9600af14b3c8748d661a4613d8020b3b8e3dd151945d148d1547749b4883f8"`
[INFO] [stderr]    Compiling serde_with_macros v1.0.1
[INFO] [stderr]    Compiling serde_with v1.3.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.21s
[INFO] running `"docker" "inspect" "3c9600af14b3c8748d661a4613d8020b3b8e3dd151945d148d1547749b4883f8"`
[INFO] running `"docker" "rm" "-f" "3c9600af14b3c8748d661a4613d8020b3b8e3dd151945d148d1547749b4883f8"`
[INFO] [stdout] 3c9600af14b3c8748d661a4613d8020b3b8e3dd151945d148d1547749b4883f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_with/1.3.1:/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] 9be2620d93d5b1cd773e72395cd2d546eb1e34ec203ae52301fcf66b45aaa51f
[INFO] running `"docker" "start" "-a" "9be2620d93d5b1cd773e72395cd2d546eb1e34ec203ae52301fcf66b45aaa51f"`
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling version-sync v0.7.0
[INFO] [stderr]    Compiling serde_with v1.3.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.94s
[INFO] running `"docker" "inspect" "9be2620d93d5b1cd773e72395cd2d546eb1e34ec203ae52301fcf66b45aaa51f"`
[INFO] running `"docker" "rm" "-f" "9be2620d93d5b1cd773e72395cd2d546eb1e34ec203ae52301fcf66b45aaa51f"`
[INFO] [stdout] 9be2620d93d5b1cd773e72395cd2d546eb1e34ec203ae52301fcf66b45aaa51f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_with/1.3.1:/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"`
[INFO] [stdout] e0c1349112c98e51e187a0b0bf1b318cfe2aa35fdb751308f8d152d952ad7c1b
[INFO] running `"docker" "start" "-a" "e0c1349112c98e51e187a0b0bf1b318cfe2aa35fdb751308f8d152d952ad7c1b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_with-ad3e6bd1db6dd1a2
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chrono-2b07e99601de525a
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/rust-c6b2c7b362cb37dd
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test prohibit_duplicate_value_btreemap ... ok
[INFO] [stdout] test duplicate_key_first_wins_hashmap ... ok
[INFO] [stdout] test duplicate_key_first_wins_btreemap ... ok
[INFO] [stdout] test string_collection_non_existing ... ok
[INFO] [stdout] test prohibit_duplicate_value_hashset ... ok
[INFO] [stdout] test tuple_list_as_map_vec ... ok
[INFO] [stdout] test tuple_list_as_map_linkedlist ... ok
[INFO] [stdout] test test_btreemap_as_tuple_list ... ok
[INFO] [stdout] test test_hashmap_as_tuple_list_fnv ... ok
[INFO] [stdout] test tuple_list_as_map_vecdeque ... ok
[INFO] [stdout] test string_collection ... ok
[INFO] [stdout] test prohibit_duplicate_value_hashmap ... ok
[INFO] [stdout] test prohibit_duplicate_value_btreeset ... ok
[INFO] [stdout] test test_hashmap_as_tuple_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/version_numbers-ce26a53f0924432a
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_readme_deps ... ok
[INFO] [stdout] test test_readme_deps_in_lib ... ok
[INFO] [stdout] test test_html_root_url ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/with_prefix-23a3a9fa40aefe92
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_flatten_with_prefix ... ok
[INFO] [stdout] test test_plain_with_prefix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_with
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/lib.rs -  (line 58) ... ok
[INFO] [stdout] test src/lib.rs -  (line 41) ... ok
[INFO] [stdout] test src/rust.rs - rust::double_option (line 327) ... ok
[INFO] [stdout] test src/rust.rs - rust::hashmap_as_tuple_list (line 966) ... ok
[INFO] [stdout] test src/rust.rs - rust::display_fromstr (line 26) ... ok
[INFO] [stdout] test src/flatten_maybe.rs - flattened_maybe (line 14) ... ok
[INFO] [stdout] test src/rust.rs - rust::btreemap_as_tuple_list (line 1097) ... ok
[INFO] [stdout] test src/rust.rs - rust::StringWithSeparator (line 233) ... ok
[INFO] [stdout] test src/rust.rs - rust::hashmap_as_tuple_list (line 997) ... ok
[INFO] [stdout] test src/rust.rs - rust::maps_duplicate_key_is_error (line 592) ... ok
[INFO] [stdout] test src/with_prefix.rs - with_prefix (line 31) ... ok
[INFO] [stdout] test src/rust.rs - rust::maps_first_key_wins (line 752) ... ok
[INFO] [stdout] test src/rust.rs - rust::string_empty_as_none (line 850) ... ok
[INFO] [stdout] test src/rust.rs - rust::sets_duplicate_value_is_error (line 495) ... ok
[INFO] [stdout] test src/rust.rs - rust::tuple_list_as_map (line 1235) ... ok
[INFO] [stdout] test src/rust.rs - rust::seq_display_fromstr (line 109) ... ok
[INFO] [stdout] test src/rust.rs - rust::unwrap_or_skip (line 405) ... ok
[INFO] [stdout] test src/with_prefix.rs - with_prefix (line 47) ... ok
[INFO] [stdout] test src/rust.rs - rust::tuple_list_as_map (line 1192) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e0c1349112c98e51e187a0b0bf1b318cfe2aa35fdb751308f8d152d952ad7c1b"`
[INFO] running `"docker" "rm" "-f" "e0c1349112c98e51e187a0b0bf1b318cfe2aa35fdb751308f8d152d952ad7c1b"`
[INFO] [stdout] e0c1349112c98e51e187a0b0bf1b318cfe2aa35fdb751308f8d152d952ad7c1b