[INFO] updating cached repository jdupl/wombo-gravity
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jdupl/wombo-gravity
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jdupl/wombo-gravity" "work/ex/beta-1.38-1/sources/1.37.0/gh/jdupl/wombo-gravity"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jdupl/wombo-gravity'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jdupl/wombo-gravity" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 58025cf24bf08d1b6a2a468e885ae6a88813abc9
[INFO] sha for GitHub repo jdupl/wombo-gravity: 58025cf24bf08d1b6a2a468e885ae6a88813abc9
[INFO] validating manifest of jdupl/wombo-gravity 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 jdupl/wombo-gravity 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 jdupl/wombo-gravity
[INFO] finished frobbing jdupl/wombo-gravity
[INFO] frobbed toml for jdupl/wombo-gravity written to work/ex/beta-1.38-1/sources/1.37.0/gh/jdupl/wombo-gravity/Cargo.toml
[INFO] started frobbing jdupl/wombo-gravity
[INFO] finished frobbing jdupl/wombo-gravity
[INFO] frobbed toml for jdupl/wombo-gravity written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity/Cargo.toml
[INFO] crate jdupl/wombo-gravity already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jdupl/wombo-gravity/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 jdupl/wombo-gravity 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity:/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] 364095cb445a195f4019e0f765d40e80443087cb4d4ec71872fa256848d99fb0
[INFO] running `"docker" "start" "-a" "364095cb445a195f4019e0f765d40e80443087cb4d4ec71872fa256848d99fb0"`
[INFO] [stderr]    Compiling bincode v0.3.0
[INFO] [stderr]    Compiling wombo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main/rust/writer.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | 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::path::Path`
[INFO] [stderr]  --> src/main/rust/writer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main/rust/main.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |         let mut body = Body {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `"docker" "inspect" "364095cb445a195f4019e0f765d40e80443087cb4d4ec71872fa256848d99fb0"`
[INFO] running `"docker" "rm" "-f" "364095cb445a195f4019e0f765d40e80443087cb4d4ec71872fa256848d99fb0"`
[INFO] [stdout] 364095cb445a195f4019e0f765d40e80443087cb4d4ec71872fa256848d99fb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity:/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] d7597b0148352d6cd7791831409b8cc4e9b04a05cf5ab84e1b1cd6bc80176030
[INFO] running `"docker" "start" "-a" "d7597b0148352d6cd7791831409b8cc4e9b04a05cf5ab84e1b1cd6bc80176030"`
[INFO] [stderr]    Compiling wombo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main/rust/writer.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | 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::path::Path`
[INFO] [stderr]  --> src/main/rust/writer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main/rust/main.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |         let mut body = Body {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "d7597b0148352d6cd7791831409b8cc4e9b04a05cf5ab84e1b1cd6bc80176030"`
[INFO] running `"docker" "rm" "-f" "d7597b0148352d6cd7791831409b8cc4e9b04a05cf5ab84e1b1cd6bc80176030"`
[INFO] [stdout] d7597b0148352d6cd7791831409b8cc4e9b04a05cf5ab84e1b1cd6bc80176030
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jdupl/wombo-gravity:/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] d9fb5690fbb892d9e675f9a14eefbbbc2b87251df997335ec6cc822781c70b9e
[INFO] running `"docker" "start" "-a" "d9fb5690fbb892d9e675f9a14eefbbbc2b87251df997335ec6cc822781c70b9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wombo-b17f6eb3ee48f5f7
[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" "d9fb5690fbb892d9e675f9a14eefbbbc2b87251df997335ec6cc822781c70b9e"`
[INFO] running `"docker" "rm" "-f" "d9fb5690fbb892d9e675f9a14eefbbbc2b87251df997335ec6cc822781c70b9e"`
[INFO] [stdout] d9fb5690fbb892d9e675f9a14eefbbbc2b87251df997335ec6cc822781c70b9e