[INFO] updating cached repository https://github.com/ityy/rust_study
[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] [stderr] From https://github.com/ityy/rust_study
[INFO] [stderr]    51c9972..4871313  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 48713132fc406a7d3a5d8e0714ad4c7f17e29e7d
[INFO] checking ityy/rust_study against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fityy%2Frust_study" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ityy/rust_study on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ityy/rust_study
[INFO] finished tweaking git repo https://github.com/ityy/rust_study
[INFO] tweaked toml for git repo https://github.com/ityy/rust_study written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ityy/rust_study already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "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] e418a606c11d0e2d3ff5829c6753c2a2a6f46c4dac5ae0dfcafcc403a0b64767
[INFO] running `"docker" "start" "-a" "e418a606c11d0e2d3ff5829c6753c2a2a6f46c4dac5ae0dfcafcc403a0b64767"`
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[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/httpT.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn h1() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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/httpT.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn h2() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_012_chain_error.rs:25:32
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_012_chain_error.rs:47:32
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_031_poll.rs:39:22
[INFO] [stderr]    |
[INFO] [stderr] 39 |     type Error = Box<Error>;
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/futures_study/future_041_wait.rs:117:22
[INFO] [stderr]     |
[INFO] [stderr] 117 |     type Error = Box<Error>;
[INFO] [stderr]     |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_051_stream.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |     type Error = Box<Error>;
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/b02_the_tao_of_programming/c02_basic/t2_5_3_match.rs:16:10
[INFO] [stderr]    |
[INFO] [stderr] 16 |         1...3 => println!("is 1 to 3"),
[INFO] [stderr]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `structA` should have an upper camel case name
[INFO] [stderr]   --> src/b02_the_tao_of_programming/c05_ownership/t5_1_0_ownership.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | struct structA {
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `StructA`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/b02_the_tao_of_programming/c06_function_closure_iterator/t6_2_0_closure.rs:8:27
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn counter(i: i32) -> Box<Fn(i32) -> i32> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/b02_the_tao_of_programming/c06_function_closure_iterator/t6_2_0_closure.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let c1: Box<Fn() -> i32> = Box::new(|| env_var + 2);
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> i32`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/httpT.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn h1() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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/httpT.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn h2() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_012_chain_error.rs:25:32
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_012_chain_error.rs:47:32
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_031_poll.rs:39:22
[INFO] [stderr]    |
[INFO] [stderr] 39 |     type Error = Box<Error>;
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/futures_study/future_041_wait.rs:117:22
[INFO] [stderr]     |
[INFO] [stderr] 117 |     type Error = Box<Error>;
[INFO] [stderr]     |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/futures_study/future_051_stream.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |     type Error = Box<Error>;
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: type `structA` should have an upper camel case name
[INFO] [stderr]   --> src/b02_the_tao_of_programming/c05_ownership/t5_1_0_ownership.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | struct structA {
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `StructA`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/b02_the_tao_of_programming/c06_function_closure_iterator/t6_2_0_closure.rs:8:27
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn counter(i: i32) -> Box<Fn(i32) -> i32> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/b02_the_tao_of_programming/c02_basic/t2_5_3_match.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     if let x = 42 {
[INFO] [stderr] 34 | |         binary += 1;
[INFO] [stderr] 35 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 29s
[INFO] running `"docker" "inspect" "e418a606c11d0e2d3ff5829c6753c2a2a6f46c4dac5ae0dfcafcc403a0b64767"`
[INFO] running `"docker" "rm" "-f" "e418a606c11d0e2d3ff5829c6753c2a2a6f46c4dac5ae0dfcafcc403a0b64767"`
[INFO] [stdout] e418a606c11d0e2d3ff5829c6753c2a2a6f46c4dac5ae0dfcafcc403a0b64767