[INFO] fetching crate smetamath 3.0.0...
[INFO] checking smetamath-3.0.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate smetamath 3.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate smetamath 3.0.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smetamath 3.0.0
[INFO] finished tweaking crates.io crate smetamath 3.0.0
[INFO] tweaked toml for crates.io crate smetamath 3.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c02ae4d8dabb6e746821634bcdd78a4ba0402ae08b9e9c9b7dbb4c12e659812
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4c02ae4d8dabb6e746821634bcdd78a4ba0402ae08b9e9c9b7dbb4c12e659812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c02ae4d8dabb6e746821634bcdd78a4ba0402ae08b9e9c9b7dbb4c12e659812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c02ae4d8dabb6e746821634bcdd78a4ba0402ae08b9e9c9b7dbb4c12e659812", kill_on_drop: false }`
[INFO] [stdout] 4c02ae4d8dabb6e746821634bcdd78a4ba0402ae08b9e9c9b7dbb4c12e659812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b45a5c1d5e16a43f496a9a229183f541a9a9b3c34967cbd1fa5e57cd42b1307
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b45a5c1d5e16a43f496a9a229183f541a9a9b3c34967cbd1fa5e57cd42b1307", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking smetamath v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:190:28
[INFO] [stdout]     |
[INFO] [stdout] 190 |             let metadata = try!(fs::metadata(&path));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:196:34
[INFO] [stdout]     |
[INFO] [stdout] 196 |                     let mut fh = try!(File::open(&path));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     try!(fh.read_to_end(&mut buf));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Job(usize, Box<FnMut() + Send>);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:61:60
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn queue_work(exec: &Executor, estimate: usize, mut f: Box<FnMut() + Send>) {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/database.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct Promise<T>(Box<FnMut() -> T + Send>);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> T + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:190:28
[INFO] [stdout]     |
[INFO] [stdout] 190 |             let metadata = try!(fs::metadata(&path));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:196:34
[INFO] [stdout]     |
[INFO] [stdout] 196 |                     let mut fh = try!(File::open(&path));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/segment_set.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     try!(fh.read_to_end(&mut buf));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Job(usize, Box<FnMut() + Send>);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:61:60
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn queue_work(exec: &Executor, estimate: usize, mut f: Box<FnMut() + Send>) {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/database.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct Promise<T>(Box<FnMut() -> T + Send>);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> T + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:247:25
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:268:25
[INFO] [stdout]     |
[INFO] [stdout] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:291:25
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:247:25
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:268:25
[INFO] [stdout]     |
[INFO] [stdout] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database.rs:291:25
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 12.28s
[INFO] running `Command { std: "docker" "inspect" "0b45a5c1d5e16a43f496a9a229183f541a9a9b3c34967cbd1fa5e57cd42b1307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b45a5c1d5e16a43f496a9a229183f541a9a9b3c34967cbd1fa5e57cd42b1307", kill_on_drop: false }`
[INFO] [stdout] 0b45a5c1d5e16a43f496a9a229183f541a9a9b3c34967cbd1fa5e57cd42b1307
