[INFO] updating cached repository benjcollins/Iris
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/benjcollins/Iris
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/benjcollins/Iris" "work/ex/beta-1.37-6/sources/1.36.0/gh/benjcollins/Iris"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/benjcollins/Iris'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/benjcollins/Iris" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 345aa9c4047a40cf13ce09c9306c86410f3e5427
[INFO] sha for GitHub repo benjcollins/Iris: 345aa9c4047a40cf13ce09c9306c86410f3e5427
[INFO] validating manifest of benjcollins/Iris on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of benjcollins/Iris on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing benjcollins/Iris
[INFO] finished frobbing benjcollins/Iris
[INFO] frobbed toml for benjcollins/Iris written to work/ex/beta-1.37-6/sources/1.36.0/gh/benjcollins/Iris/Cargo.toml
[INFO] started frobbing benjcollins/Iris
[INFO] finished frobbing benjcollins/Iris
[INFO] frobbed toml for benjcollins/Iris written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris/Cargo.toml
[INFO] crate benjcollins/Iris already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing benjcollins/Iris against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c2f8992c9e6ad28e54ed285405894b4a5beb4d42b58ef0edabab9d04f08a8df4
[INFO] running `"docker" "start" "-a" "c2f8992c9e6ad28e54ed285405894b4a5beb4d42b58ef0edabab9d04f08a8df4"`
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     opr: &'a Fn(Expr, Expr) -> Node,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Expr, Expr) -> Node`
[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/parser.rs:34:14
[INFO] [stderr]    |
[INFO] [stderr] 34 |     opr: &'a Fn(Expr) -> Node,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Expr) -> Node`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/parser.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut col = self.col;
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut col = self.col;
[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 0.77s
[INFO] running `"docker" "inspect" "c2f8992c9e6ad28e54ed285405894b4a5beb4d42b58ef0edabab9d04f08a8df4"`
[INFO] running `"docker" "rm" "-f" "c2f8992c9e6ad28e54ed285405894b4a5beb4d42b58ef0edabab9d04f08a8df4"`
[INFO] [stdout] c2f8992c9e6ad28e54ed285405894b4a5beb4d42b58ef0edabab9d04f08a8df4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bdb7829d5d0356509d51ec52a3914f86c60248adf9656697d9e1d2889a2c9d5d
[INFO] running `"docker" "start" "-a" "bdb7829d5d0356509d51ec52a3914f86c60248adf9656697d9e1d2889a2c9d5d"`
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     opr: &'a Fn(Expr, Expr) -> Node,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Expr, Expr) -> Node`
[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/parser.rs:34:14
[INFO] [stderr]    |
[INFO] [stderr] 34 |     opr: &'a Fn(Expr) -> Node,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Expr) -> Node`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/parser.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut col = self.col;
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut col = self.col;
[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 0.82s
[INFO] running `"docker" "inspect" "bdb7829d5d0356509d51ec52a3914f86c60248adf9656697d9e1d2889a2c9d5d"`
[INFO] running `"docker" "rm" "-f" "bdb7829d5d0356509d51ec52a3914f86c60248adf9656697d9e1d2889a2c9d5d"`
[INFO] [stdout] bdb7829d5d0356509d51ec52a3914f86c60248adf9656697d9e1d2889a2c9d5d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benjcollins/Iris:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] c83276a460be48f75c08cfff7b499a32473f3f2024261b51284dd8e3cc73e0b6
[INFO] running `"docker" "start" "-a" "c83276a460be48f75c08cfff7b499a32473f3f2024261b51284dd8e3cc73e0b6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lang-2067507f84235be0
[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" "c83276a460be48f75c08cfff7b499a32473f3f2024261b51284dd8e3cc73e0b6"`
[INFO] running `"docker" "rm" "-f" "c83276a460be48f75c08cfff7b499a32473f3f2024261b51284dd8e3cc73e0b6"`
[INFO] [stdout] c83276a460be48f75c08cfff7b499a32473f3f2024261b51284dd8e3cc73e0b6