[INFO] updating cached repository https://github.com/danzhu/rust-fin
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 523dcb02f1cc5196560acaa714cde4f281a37fed
[INFO] testing danzhu/rust-fin against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanzhu%2Frust-fin" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danzhu/rust-fin on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/danzhu/rust-fin
[INFO] finished tweaking git repo https://github.com/danzhu/rust-fin
[INFO] tweaked toml for git repo https://github.com/danzhu/rust-fin written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/danzhu/rust-fin already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 60c30c24295b72527001bccbf40b2a72ccba37f5b2efb9ebfed55be42b879781
[INFO] running `"docker" "start" "-a" "60c30c24295b72527001bccbf40b2a72ccba37f5b2efb9ebfed55be42b879781"`
[INFO] [stderr]    Compiling fin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ast_gen.rs:158:17
[INFO] [stderr]     |
[INFO] [stderr] 158 |             let mut res = Resolver {
[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/code_gen.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 |             let mut bb = self.def.add_block();
[INFO] [stderr]    |                 ----^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `"docker" "inspect" "60c30c24295b72527001bccbf40b2a72ccba37f5b2efb9ebfed55be42b879781"`
[INFO] running `"docker" "rm" "-f" "60c30c24295b72527001bccbf40b2a72ccba37f5b2efb9ebfed55be42b879781"`
[INFO] [stdout] 60c30c24295b72527001bccbf40b2a72ccba37f5b2efb9ebfed55be42b879781
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6089cb2c33e996aa72c1282f0edf9a7bb3f90d368f196952359bca7c8e0a54b2
[INFO] running `"docker" "start" "-a" "6089cb2c33e996aa72c1282f0edf9a7bb3f90d368f196952359bca7c8e0a54b2"`
[INFO] [stderr]    Compiling fin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ast_gen.rs:158:17
[INFO] [stderr]     |
[INFO] [stderr] 158 |             let mut res = Resolver {
[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/code_gen.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 |             let mut bb = self.def.add_block();
[INFO] [stderr]    |                 ----^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `"docker" "inspect" "6089cb2c33e996aa72c1282f0edf9a7bb3f90d368f196952359bca7c8e0a54b2"`
[INFO] running `"docker" "rm" "-f" "6089cb2c33e996aa72c1282f0edf9a7bb3f90d368f196952359bca7c8e0a54b2"`
[INFO] [stdout] 6089cb2c33e996aa72c1282f0edf9a7bb3f90d368f196952359bca7c8e0a54b2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] faba635b2d1fd46b919a230157d5712996b90e9091b1decbda029cdd019ac356
[INFO] running `"docker" "start" "-a" "faba635b2d1fd46b919a230157d5712996b90e9091b1decbda029cdd019ac356"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fin-5eebc0a5b76aaa61
[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" "faba635b2d1fd46b919a230157d5712996b90e9091b1decbda029cdd019ac356"`
[INFO] running `"docker" "rm" "-f" "faba635b2d1fd46b919a230157d5712996b90e9091b1decbda029cdd019ac356"`
[INFO] [stdout] faba635b2d1fd46b919a230157d5712996b90e9091b1decbda029cdd019ac356