[INFO] fetching crate io-providers 0.2.0-beta.3...
[INFO] checking io-providers-0.2.0-beta.3 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate io-providers 0.2.0-beta.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate io-providers 0.2.0-beta.3 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-providers 0.2.0-beta.3
[INFO] finished tweaking crates.io crate io-providers 0.2.0-beta.3
[INFO] tweaked toml for crates.io crate io-providers 0.2.0-beta.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 229992468f232c0ce4a27bde7e2262652bbe8759176692f37d3115583b1ea97f
[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" "229992468f232c0ce4a27bde7e2262652bbe8759176692f37d3115583b1ea97f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "229992468f232c0ce4a27bde7e2262652bbe8759176692f37d3115583b1ea97f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "229992468f232c0ce4a27bde7e2262652bbe8759176692f37d3115583b1ea97f", kill_on_drop: false }`
[INFO] [stdout] 229992468f232c0ce4a27bde7e2262652bbe8759176692f37d3115583b1ea97f
[INFO] running `Command { std: "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" "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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4f7fa603b5c854a792483c70e1d1881f03a4845a030a4cd1a853a29f778fcc9
[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" "c4f7fa603b5c854a792483c70e1d1881f03a4845a030a4cd1a853a29f778fcc9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking io-providers v0.2.0-beta.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/native.rs:34:33
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn input(&mut self) -> &mut io::Read {
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[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/std_streams/native.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn output(&mut self) -> &mut io::Write {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/native.rs:42:33
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn error(&mut self) -> &mut io::Write {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/simulated.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn input(&mut self) -> &mut Read {
[INFO] [stdout]    |                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/simulated.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn output(&mut self) -> &mut Write {
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/std_streams/simulated.rs:101:33
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn error(&mut self) -> &mut Write {
[INFO] [stdout]     |                                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:44:33
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn input(&mut self) -> &mut io::Read;
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn output(&mut self) -> &mut io::Write;
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:50:33
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn error(&mut self) -> &mut io::Write;
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/native.rs:34:33
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn input(&mut self) -> &mut io::Read {
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[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/std_streams/native.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn output(&mut self) -> &mut io::Write {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/native.rs:42:33
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn error(&mut self) -> &mut io::Write {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/simulated.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn input(&mut self) -> &mut Read {
[INFO] [stdout]    |                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/simulated.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn output(&mut self) -> &mut Write {
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/std_streams/simulated.rs:101:33
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn error(&mut self) -> &mut Write {
[INFO] [stdout]     |                                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:44:33
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn input(&mut self) -> &mut io::Read;
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn output(&mut self) -> &mut io::Write;
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/std_streams/mod.rs:50:33
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn error(&mut self) -> &mut io::Write;
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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 [unoptimized + debuginfo] target(s) in 6.50s
[INFO] running `Command { std: "docker" "inspect" "c4f7fa603b5c854a792483c70e1d1881f03a4845a030a4cd1a853a29f778fcc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f7fa603b5c854a792483c70e1d1881f03a4845a030a4cd1a853a29f778fcc9", kill_on_drop: false }`
[INFO] [stdout] c4f7fa603b5c854a792483c70e1d1881f03a4845a030a4cd1a853a29f778fcc9