[INFO] updating cached repository https://github.com/prevy/prevy-rust
[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] b8e392dc545f284440a4ddda2bdf23e78ec83cc4
[INFO] testing prevy/prevy-rust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprevy%2Fprevy-rust" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prevy/prevy-rust 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/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 work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/prevy/prevy-rust 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] [stderr] error: the lock file /big/crater/work/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[INFO] the lockfile is outdated, regenerating it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 `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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] 87eb91349fd6fd82a42cdfd2e15f9af0cf4eae7494f047ac6ffb13cc6032c6d7
[INFO] running `"docker" "start" "-a" "87eb91349fd6fd82a42cdfd2e15f9af0cf4eae7494f047ac6ffb13cc6032c6d7"`
[INFO] [stderr]    Compiling xdg-basedir v1.0.0
[INFO] [stderr]    Compiling prevy v0.1.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(deprecated)]` 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: consider prefixing 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:8:1
[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]     Finished dev [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `"docker" "inspect" "87eb91349fd6fd82a42cdfd2e15f9af0cf4eae7494f047ac6ffb13cc6032c6d7"`
[INFO] running `"docker" "rm" "-f" "87eb91349fd6fd82a42cdfd2e15f9af0cf4eae7494f047ac6ffb13cc6032c6d7"`
[INFO] [stdout] 87eb91349fd6fd82a42cdfd2e15f9af0cf4eae7494f047ac6ffb13cc6032c6d7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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] afdb779e6193bc54383584d6422a0c0844f5ae554546c89efcab19a4fe0ba0f0
[INFO] running `"docker" "start" "-a" "afdb779e6193bc54383584d6422a0c0844f5ae554546c89efcab19a4fe0ba0f0"`
[INFO] [stderr]    Compiling prevy v0.1.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(deprecated)]` 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: consider prefixing 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:8:1
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "afdb779e6193bc54383584d6422a0c0844f5ae554546c89efcab19a4fe0ba0f0"`
[INFO] running `"docker" "rm" "-f" "afdb779e6193bc54383584d6422a0c0844f5ae554546c89efcab19a4fe0ba0f0"`
[INFO] [stdout] afdb779e6193bc54383584d6422a0c0844f5ae554546c89efcab19a4fe0ba0f0
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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] 6e2fabb354d49fe7cf9f919fe587730fd9b7c0706388116581bc0d7c72f780e8
[INFO] running `"docker" "start" "-a" "6e2fabb354d49fe7cf9f919fe587730fd9b7c0706388116581bc0d7c72f780e8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/prevy-5ed27255a3b0d3ab
[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" "6e2fabb354d49fe7cf9f919fe587730fd9b7c0706388116581bc0d7c72f780e8"`
[INFO] running `"docker" "rm" "-f" "6e2fabb354d49fe7cf9f919fe587730fd9b7c0706388116581bc0d7c72f780e8"`
[INFO] [stdout] 6e2fabb354d49fe7cf9f919fe587730fd9b7c0706388116581bc0d7c72f780e8