[INFO] crate serde_json 1.0.40 is already in cache
[INFO] extracting crate serde_json 1.0.40 into work/ex/beta-1.38-1/sources/1.37.0/reg/serde_json/1.0.40
[INFO] extracting crate serde_json 1.0.40 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_json/1.0.40
[INFO] validating manifest of serde_json-1.0.40 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_json-1.0.40 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_json-1.0.40
[INFO] finished frobbing serde_json-1.0.40
[INFO] frobbed toml for serde_json-1.0.40 written to work/ex/beta-1.38-1/sources/1.37.0/reg/serde_json/1.0.40/Cargo.toml
[INFO] started frobbing serde_json-1.0.40
[INFO] finished frobbing serde_json-1.0.40
[INFO] frobbed toml for serde_json-1.0.40 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_json/1.0.40/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing serde_json-1.0.40 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_json/1.0.40:/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] a8053d0d7e032f3faa9a33d871084305e551822e195a73e22e734eb16767f859
[INFO] running `"docker" "start" "-a" "a8053d0d7e032f3faa9a33d871084305e551822e195a73e22e734eb16767f859"`
[INFO] [stderr]    Compiling serde_json v1.0.40 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `"docker" "inspect" "a8053d0d7e032f3faa9a33d871084305e551822e195a73e22e734eb16767f859"`
[INFO] running `"docker" "rm" "-f" "a8053d0d7e032f3faa9a33d871084305e551822e195a73e22e734eb16767f859"`
[INFO] [stdout] a8053d0d7e032f3faa9a33d871084305e551822e195a73e22e734eb16767f859
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_json/1.0.40:/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] 597b8353b01fe8024cafec583d48d4e48ff22783eaf1311a3b89bac25d73e89c
[INFO] running `"docker" "start" "-a" "597b8353b01fe8024cafec583d48d4e48ff22783eaf1311a3b89bac25d73e89c"`
[INFO] [stderr]    Compiling stacker v0.1.5
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]    Compiling select-rustc v0.1.2
[INFO] [stderr]    Compiling serde_bytes v0.11.2
[INFO] [stderr]    Compiling trybuild v1.0.11
[INFO] [stderr]    Compiling serde_stacker v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.40 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.60s
[INFO] running `"docker" "inspect" "597b8353b01fe8024cafec583d48d4e48ff22783eaf1311a3b89bac25d73e89c"`
[INFO] running `"docker" "rm" "-f" "597b8353b01fe8024cafec583d48d4e48ff22783eaf1311a3b89bac25d73e89c"`
[INFO] [stdout] 597b8353b01fe8024cafec583d48d4e48ff22783eaf1311a3b89bac25d73e89c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/serde_json/1.0.40:/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] 597dab9a3fadfeda7774f05076de7ca2071af60819e2200eb158c92da4aa78c7
[INFO] running `"docker" "start" "-a" "597dab9a3fadfeda7774f05076de7ca2071af60819e2200eb158c92da4aa78c7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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/serde_json-01bc16f1bda996a7
[INFO] [stderr]    Doc-tests serde_json
[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" "597dab9a3fadfeda7774f05076de7ca2071af60819e2200eb158c92da4aa78c7"`
[INFO] running `"docker" "rm" "-f" "597dab9a3fadfeda7774f05076de7ca2071af60819e2200eb158c92da4aa78c7"`
[INFO] [stdout] 597dab9a3fadfeda7774f05076de7ca2071af60819e2200eb158c92da4aa78c7