[INFO] fetching crate libcodejam 0.2.0...
[INFO] checking libcodejam-0.2.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate libcodejam 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libcodejam 0.2.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libcodejam 0.2.0
[INFO] finished tweaking crates.io crate libcodejam 0.2.0
[INFO] tweaked toml for crates.io crate libcodejam 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 064baa0de32a2854631d75851be0c07f66859c7606ea830781be80d26e650909
[INFO] running `Command { std: "docker" "start" "-a" "064baa0de32a2854631d75851be0c07f66859c7606ea830781be80d26e650909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "064baa0de32a2854631d75851be0c07f66859c7606ea830781be80d26e650909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "064baa0de32a2854631d75851be0c07f66859c7606ea830781be80d26e650909", kill_on_drop: false }`
[INFO] [stdout] 064baa0de32a2854631d75851be0c07f66859c7606ea830781be80d26e650909
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdae457811b919f7c88ea169b6971dcb14d99abb09803b3306a30975dde913d4
[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" "cdae457811b919f7c88ea169b6971dcb14d99abb09803b3306a30975dde913d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]    Compiling derive_more v0.11.0
[INFO] [stderr]     Checking libcodejam v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/data/global.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[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/data/group.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:111:16
[INFO] [stdout]     |
[INFO] [stdout] 111 |     error: Box<Error + Send>,
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:134:32
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:178:16
[INFO] [stdout]     |
[INFO] [stdout] 178 |     error: Box<Error + Send>,
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/executor.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/executor.rs:101:32
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokens.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokens.rs:57:32
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/data/global.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[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/data/group.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:111:16
[INFO] [stdout]     |
[INFO] [stdout] 111 |     error: Box<Error + Send>,
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:134:32
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:178:16
[INFO] [stdout]     |
[INFO] [stdout] 178 |     error: Box<Error + Send>,
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/data/group.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/executor.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/executor.rs:101:32
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokens.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokens.rs:57:32
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stdout]    --> src/data/group.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn new<E: Error + Send + 'static>(index: usize, error: E) -> Self {
[INFO] [stdout]     |                   ----- required by this bound in `TupleGroupError::new`
[INFO] [stdout] ...
[INFO] [stdout] 142 |         TupleGroupError::new(0, err)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stdout]    --> src/data/group.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn new<E: Error + Send + 'static>(index: usize, error: E) -> Self {
[INFO] [stdout]     |                   ----- required by this bound in `TupleGroupError::new`
[INFO] [stdout] ...
[INFO] [stdout] 142 |         TupleGroupError::new(0, err)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libcodejam`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cdae457811b919f7c88ea169b6971dcb14d99abb09803b3306a30975dde913d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdae457811b919f7c88ea169b6971dcb14d99abb09803b3306a30975dde913d4", kill_on_drop: false }`
[INFO] [stdout] cdae457811b919f7c88ea169b6971dcb14d99abb09803b3306a30975dde913d4
