[INFO] cloning repository https://github.com/bholt/scarlet
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bholt/scarlet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbholt%2Fscarlet"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbholt%2Fscarlet'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52266255bc99d2185fd17282c27b93e3f21cd6bd
[INFO] checking bholt/scarlet against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbholt%2Fscarlet" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bholt/scarlet on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bholt/scarlet
[INFO] finished tweaking git repo https://github.com/bholt/scarlet
[INFO] tweaked toml for git repo https://github.com/bholt/scarlet written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/bholt/scarlet already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/mitsuhiko/redis-rs.git`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3bacd80007e21933b06f6bb8dd58e19f13a6047650760c7d81f125609793dfb1
[INFO] running `"docker" "start" "-a" "3bacd80007e21933b06f6bb8dd58e19f13a6047650760c7d81f125609793dfb1"`
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking redis v0.13.1-alpha.0 (https://github.com/mitsuhiko/redis-rs.git#418512bf)
[INFO] [stderr]     Checking scarlet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 9  | fn check(c: &Connection) -> RedisResult<isize> {
[INFO] [stderr]    |             ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr]    |          ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | fn check(c: &Connection) -> RedisResult<isize> {
[INFO] [stderr]    |             ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr] 11 |     c.get("foo") as RedisResult<isize>
[INFO] [stderr]    |     ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn set(&self, c: &Connection) -> RedisResult<()> {
[INFO] [stderr]    |                      ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 52 |         c.hset_multiple(Self::key(self.id), argmap!(
[INFO] [stderr]    |         ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `c` as mutable, as it is not declared as mutable
[INFO] [stderr]   --> src/main.rs:78:27
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let c = client.get_connection().unwrap();
[INFO] [stderr]    |         - help: consider changing this to be mutable: `mut c`
[INFO] [stderr] ...
[INFO] [stderr] 78 |     let r : Vec<String> = c.hget(User::key(u.id), &["username","first","last"]).unwrap();
[INFO] [stderr]    |                           ^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: could not compile `scarlet`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 9  | fn check(c: &Connection) -> RedisResult<isize> {
[INFO] [stderr]    |             ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr]    |          ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | fn check(c: &Connection) -> RedisResult<isize> {
[INFO] [stderr]    |             ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 10 |     try!(c.set("foo", 42));
[INFO] [stderr] 11 |     c.get("foo") as RedisResult<isize>
[INFO] [stderr]    |     ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*c` as mutable, as it is behind a `&` reference
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn set(&self, c: &Connection) -> RedisResult<()> {
[INFO] [stderr]    |                      ----------- help: consider changing this to be a mutable reference: `&mut redis::Connection`
[INFO] [stderr] 52 |         c.hset_multiple(Self::key(self.id), argmap!(
[INFO] [stderr]    |         ^ `c` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `c` as mutable, as it is not declared as mutable
[INFO] [stderr]   --> src/main.rs:78:27
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let c = client.get_connection().unwrap();
[INFO] [stderr]    |         - help: consider changing this to be mutable: `mut c`
[INFO] [stderr] ...
[INFO] [stderr] 78 |     let r : Vec<String> = c.hget(User::key(u.id), &["username","first","last"]).unwrap();
[INFO] [stderr]    |                           ^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: could not compile `scarlet`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3bacd80007e21933b06f6bb8dd58e19f13a6047650760c7d81f125609793dfb1"`
[INFO] running `"docker" "rm" "-f" "3bacd80007e21933b06f6bb8dd58e19f13a6047650760c7d81f125609793dfb1"`
[INFO] [stdout] 3bacd80007e21933b06f6bb8dd58e19f13a6047650760c7d81f125609793dfb1