[INFO] updating cached repository scolsen/eco
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/scolsen/eco
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/scolsen/eco" "work/ex/beta-1.38-1/sources/1.37.0/gh/scolsen/eco"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/scolsen/eco'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/scolsen/eco" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/scolsen/eco"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/scolsen/eco'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f85e29427d2573bf34ffe72e3ae501dc18852ba
[INFO] sha for GitHub repo scolsen/eco: 4f85e29427d2573bf34ffe72e3ae501dc18852ba
[INFO] validating manifest of scolsen/eco 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 scolsen/eco 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 scolsen/eco
[INFO] finished frobbing scolsen/eco
[INFO] frobbed toml for scolsen/eco written to work/ex/beta-1.38-1/sources/1.37.0/gh/scolsen/eco/Cargo.toml
[INFO] started frobbing scolsen/eco
[INFO] finished frobbing scolsen/eco
[INFO] frobbed toml for scolsen/eco written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/scolsen/eco/Cargo.toml
[INFO] crate scolsen/eco 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing scolsen/eco 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/scolsen/eco:/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] e8f9bbd98c068cd3fdb2b159d8e2599460acb36a760883fe66237c4368947417
[INFO] running `"docker" "start" "-a" "e8f9bbd98c068cd3fdb2b159d8e2599460acb36a760883fe66237c4368947417"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.18
[INFO] [stderr]    Compiling serde v1.0.77
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.1
[INFO] [stderr]    Compiling serde_derive v1.0.77
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling eco v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `,`
[INFO] [stderr]   --> src/config/reader.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Ok(toml::from_str(x).unwrap()),
[INFO] [stderr]    |                                   ^ expected one of `.`, `;`, `?`, `}`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `x` in this scope
[INFO] [stderr]   --> src/config/reader.rs:20:23
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Ok(toml::from_str(x).unwrap()),
[INFO] [stderr]    |                       ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/config/reader.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `toml::Value`
[INFO] [stderr]  --> src/config/reader.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use toml::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config/reader.rs:13:45
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn read_config_file() -> Result<String, Box<::std::error::Error + 'static>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ::std::error::Error + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config/reader.rs:18:45
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn parse_config() -> Result<Config, Box<::std::error::Error + 'static>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ::std::error::Error + 'static`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `eco`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e8f9bbd98c068cd3fdb2b159d8e2599460acb36a760883fe66237c4368947417"`
[INFO] running `"docker" "rm" "-f" "e8f9bbd98c068cd3fdb2b159d8e2599460acb36a760883fe66237c4368947417"`
[INFO] [stdout] e8f9bbd98c068cd3fdb2b159d8e2599460acb36a760883fe66237c4368947417