[INFO] crate r9ir 1.0.0 is already in cache
[INFO] extracting crate r9ir 1.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/r9ir/1.0.0
[INFO] extracting crate r9ir 1.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r9ir/1.0.0
[INFO] validating manifest of r9ir-1.0.0 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 r9ir-1.0.0 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 r9ir-1.0.0
[INFO] finished frobbing r9ir-1.0.0
[INFO] frobbed toml for r9ir-1.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/r9ir/1.0.0/Cargo.toml
[INFO] started frobbing r9ir-1.0.0
[INFO] finished frobbing r9ir-1.0.0
[INFO] frobbed toml for r9ir-1.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r9ir/1.0.0/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 r9ir-1.0.0 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-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r9ir/1.0.0:/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] 16dd23fe6775f9176e19795b4e22658a17b599f2a0d996908df6644bcb3eb726
[INFO] running `"docker" "start" "-a" "16dd23fe6775f9176e19795b4e22658a17b599f2a0d996908df6644bcb3eb726"`
[INFO] [stderr]    Compiling r9ir v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/token.rs:288:32
[INFO] [stderr]     |
[INFO] [stderr] 288 | fn open_file(f: String) -> Box<Read> {
[INFO] [stderr]     |                                ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1272:17
[INFO] [stderr]      |
[INFO] [stderr] 1272 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::FOR, Some(Box::new(t.clone())))));
[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] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1301:17
[INFO] [stderr]      |
[INFO] [stderr] 1301 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::FOR, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1315:17
[INFO] [stderr]      |
[INFO] [stderr] 1315 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::DO_WHILE, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1331:17
[INFO] [stderr]      |
[INFO] [stderr] 1331 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::SWITCH, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sema.rs:422:13
[INFO] [stderr]     |
[INFO] [stderr] 422 |         let mut body = node.borrow_mut().body.clone().unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/liveness.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let mut ent = bbs[0].clone();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.64s
[INFO] running `"docker" "inspect" "16dd23fe6775f9176e19795b4e22658a17b599f2a0d996908df6644bcb3eb726"`
[INFO] running `"docker" "rm" "-f" "16dd23fe6775f9176e19795b4e22658a17b599f2a0d996908df6644bcb3eb726"`
[INFO] [stdout] 16dd23fe6775f9176e19795b4e22658a17b599f2a0d996908df6644bcb3eb726
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r9ir/1.0.0:/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] b059f91c0a7e8801a6ad8fca5ff0186253f331840bf4c4a37d8f1626ae23ab33
[INFO] running `"docker" "start" "-a" "b059f91c0a7e8801a6ad8fca5ff0186253f331840bf4c4a37d8f1626ae23ab33"`
[INFO] [stderr]    Compiling r9ir v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/token.rs:288:32
[INFO] [stderr]     |
[INFO] [stderr] 288 | fn open_file(f: String) -> Box<Read> {
[INFO] [stderr]     |                                ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1272:17
[INFO] [stderr]      |
[INFO] [stderr] 1272 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::FOR, Some(Box::new(t.clone())))));
[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] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1301:17
[INFO] [stderr]      |
[INFO] [stderr] 1301 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::FOR, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1315:17
[INFO] [stderr]      |
[INFO] [stderr] 1315 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::DO_WHILE, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/parse.rs:1331:17
[INFO] [stderr]      |
[INFO] [stderr] 1331 |             let mut node = Rc::new(RefCell::new(new_node(NodeType::SWITCH, Some(Box::new(t.clone())))));
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sema.rs:422:13
[INFO] [stderr]     |
[INFO] [stderr] 422 |         let mut body = node.borrow_mut().body.clone().unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/liveness.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let mut ent = bbs[0].clone();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `"docker" "inspect" "b059f91c0a7e8801a6ad8fca5ff0186253f331840bf4c4a37d8f1626ae23ab33"`
[INFO] running `"docker" "rm" "-f" "b059f91c0a7e8801a6ad8fca5ff0186253f331840bf4c4a37d8f1626ae23ab33"`
[INFO] [stdout] b059f91c0a7e8801a6ad8fca5ff0186253f331840bf4c4a37d8f1626ae23ab33
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r9ir/1.0.0:/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] 888fef54c761ec5226924db2fa9fb6c5768808e35e3f3b8ef46cf280a9afe465
[INFO] running `"docker" "start" "-a" "888fef54c761ec5226924db2fa9fb6c5768808e35e3f3b8ef46cf280a9afe465"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/r9ir-3c0f8d80c1fb86d5
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/r9ir-330e214eb0e657b8
[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]    Doc-tests r9ir
[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" "888fef54c761ec5226924db2fa9fb6c5768808e35e3f3b8ef46cf280a9afe465"`
[INFO] running `"docker" "rm" "-f" "888fef54c761ec5226924db2fa9fb6c5768808e35e3f3b8ef46cf280a9afe465"`
[INFO] [stdout] 888fef54c761ec5226924db2fa9fb6c5768808e35e3f3b8ef46cf280a9afe465