[INFO] updating cached repository https://github.com/prevy/prevy-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] b8e392dc545f284440a4ddda2bdf23e78ec83cc4
[INFO] checking prevy/prevy-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprevy%2Fprevy-rust" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prevy/prevy-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/prevy/prevy-rust
[INFO] finished tweaking git repo https://github.com/prevy/prevy-rust
[INFO] tweaked toml for git repo https://github.com/prevy/prevy-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/prevy/prevy-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 10c0976dc9bd249012526cc97cac2e833cc5e31141f584889ed8868328380386
[INFO] running `"docker" "start" "-a" "10c0976dc9bd249012526cc97cac2e833cc5e31141f584889ed8868328380386"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.1.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking threadpool v1.8.0
[INFO] [stderr]     Checking prevy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vcs/mod.rs:99:15
[INFO] [stderr]    |
[INFO] [stderr] 99 |         path: try!(as_string(hash.0)),
[INFO] [stderr]    |               ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:34
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:59
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/commands/update.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: use `dyn`: `dyn Repo + Send`
[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/commands/update.rs:11:49
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr]   |                           ^^^^^^^^^^^ help: use `dyn`: `dyn Repo + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:49
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr]   |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context/workspace.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub repos: Vec<Box<Repo>>,
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:62:32
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn clone_box(&self) -> Box<Repo>;
[INFO] [stderr]    |                                ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:68:32
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn clone_box(&self) -> Box<Repo> {
[INFO] [stderr]    |                                ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 | impl fmt::Debug for Repo {
[INFO] [stderr]    |                     ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:87:20
[INFO] [stderr]    |
[INFO] [stderr] 87 | impl Clone for Box<Repo> {
[INFO] [stderr]    |                    ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:88:28
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn clone(&self) -> Box<Repo> {
[INFO] [stderr]    |                            ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:97:54
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[INFO] [stderr]    |                                                      ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vcs/mod.rs:99:15
[INFO] [stderr]    |
[INFO] [stderr] 99 |         path: try!(as_string(hash.0)),
[INFO] [stderr]    |               ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:34
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:59
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/commands/update.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: use `dyn`: `dyn Repo + Send`
[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/commands/update.rs:11:49
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr]   |                           ^^^^^^^^^^^ help: use `dyn`: `dyn Repo + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:49
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr]   |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context/workspace.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub repos: Vec<Box<Repo>>,
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:62:32
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn clone_box(&self) -> Box<Repo>;
[INFO] [stderr]    |                                ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:68:32
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn clone_box(&self) -> Box<Repo> {
[INFO] [stderr]    |                                ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 | impl fmt::Debug for Repo {
[INFO] [stderr]    |                     ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:87:20
[INFO] [stderr]    |
[INFO] [stderr] 87 | impl Clone for Box<Repo> {
[INFO] [stderr]    |                    ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:88:28
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn clone(&self) -> Box<Repo> {
[INFO] [stderr]    |                            ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:97:54
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[INFO] [stderr]    |                                                      ^^^^ help: use `dyn`: `dyn Repo`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/core/constants.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     var.trim_left_matches(VAR_PREFIX).to_lowercase().to_string()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/core/constants.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     var.trim_left_matches(VAR_PREFIX).to_lowercase().to_string()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/commands/update.rs:13:18
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let (tx, rx) = channel();
[INFO] [stderr]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/commands/update.rs:13:18
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let (tx, rx) = channel();
[INFO] [stderr]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Update`
[INFO] [stderr]  --> src/commands/update.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Update;
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Update`
[INFO] [stderr]  --> src/commands/update.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Update;
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.17s
[INFO] running `"docker" "inspect" "10c0976dc9bd249012526cc97cac2e833cc5e31141f584889ed8868328380386"`
[INFO] running `"docker" "rm" "-f" "10c0976dc9bd249012526cc97cac2e833cc5e31141f584889ed8868328380386"`
[INFO] [stdout] 10c0976dc9bd249012526cc97cac2e833cc5e31141f584889ed8868328380386