[INFO] fetching crate retty-io 0.3.0...
[INFO] checking retty-io-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate retty-io 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate retty-io 0.3.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retty-io 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate retty-io 0.3.0
[INFO] tweaked toml for crates.io crate retty-io 0.3.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.3.0 (latest: v1.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding env_logger v0.4.3 (latest: v0.11.3)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding miow v0.2.2 (latest: v0.6.0)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding remove_dir_all v0.5.3 (latest: v0.8.2)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.4.3
[INFO] [stderr]   Downloaded bytes v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 181879e3da58fd5358353cefb85890b503dffdca2a428d24925c1eb656f8219d
[INFO] running `Command { std: "docker" "start" "-a" "181879e3da58fd5358353cefb85890b503dffdca2a428d24925c1eb656f8219d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "181879e3da58fd5358353cefb85890b503dffdca2a428d24925c1eb656f8219d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "181879e3da58fd5358353cefb85890b503dffdca2a428d24925c1eb656f8219d", kill_on_drop: false }`
[INFO] [stdout] 181879e3da58fd5358353cefb85890b503dffdca2a428d24925c1eb656f8219d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0386788f1922ca8549d8a1bfef03929188648d285c927c4a703e4973e581ce52
[INFO] running `Command { std: "docker" "start" "-a" "0386788f1922ca8549d8a1bfef03929188648d285c927c4a703e4973e581ce52", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking retty-io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |                                     ^^^^          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/mod.rs:1:12
[INFO] [stdout]     |
[INFO] [stdout] 1   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/dlsym.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/epoll.rs:8:12
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/io.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/tcp.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uio.rs:3:5
[INFO] [stdout]     |
[INFO] [stdout] 3   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uds.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iovec::IoVec`
[INFO] [stdout]   --> src/sys/unix/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub use iovec::IoVec;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `net2` is imported redundantly
[INFO] [stdout]  --> test/test_tcp.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use net2::{self, TcpStreamExt};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: test/mod.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate net2;
[INFO] [stdout]   | ------------------ the item `net2` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |                                     ^^^^          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/mod.rs:1:12
[INFO] [stdout]     |
[INFO] [stdout] 1   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/dlsym.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/epoll.rs:8:12
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/io.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/tcp.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uio.rs:3:5
[INFO] [stdout]     |
[INFO] [stdout] 3   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uds.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iovec::IoVec`
[INFO] [stdout]   --> src/sys/unix/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub use iovec::IoVec;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/timer.rs:583:21
[INFO] [stdout]     |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `Duration` is already imported here
[INFO] [stdout] 583 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Instant` is imported redundantly
[INFO] [stdout]    --> src/timer.rs:583:31
[INFO] [stdout]     |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `Instant` is already imported here
[INFO] [stdout] 583 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "0386788f1922ca8549d8a1bfef03929188648d285c927c4a703e4973e581ce52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0386788f1922ca8549d8a1bfef03929188648d285c927c4a703e4973e581ce52", kill_on_drop: false }`
[INFO] [stdout] 0386788f1922ca8549d8a1bfef03929188648d285c927c4a703e4973e581ce52
[INFO] checking retty-io-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate retty-io 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate retty-io 0.3.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retty-io 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate retty-io 0.3.0
[INFO] tweaked toml for crates.io crate retty-io 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 210d90babd699c3bc95abff0c300b479746b1a536b10eabb12655884d98da64c
[INFO] running `Command { std: "docker" "start" "-a" "210d90babd699c3bc95abff0c300b479746b1a536b10eabb12655884d98da64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "210d90babd699c3bc95abff0c300b479746b1a536b10eabb12655884d98da64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "210d90babd699c3bc95abff0c300b479746b1a536b10eabb12655884d98da64c", kill_on_drop: false }`
[INFO] [stdout] 210d90babd699c3bc95abff0c300b479746b1a536b10eabb12655884d98da64c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 584f10affc0ec96ad184ca0ddc01372016b7aba4cf2fcbfb6b0fcdf15d9808d6
[INFO] running `Command { std: "docker" "start" "-a" "584f10affc0ec96ad184ca0ddc01372016b7aba4cf2fcbfb6b0fcdf15d9808d6", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking retty-io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |                                     ^^^^          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/mod.rs:1:12
[INFO] [stdout]     |
[INFO] [stdout] 1   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/dlsym.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/epoll.rs:8:12
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/io.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/tcp.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uio.rs:3:5
[INFO] [stdout]     |
[INFO] [stdout] 3   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uds.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iovec::IoVec`
[INFO] [stdout]   --> src/sys/unix/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub use iovec::IoVec;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |                                     ^^^^          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/mod.rs:1:12
[INFO] [stdout]     |
[INFO] [stdout] 1   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/dlsym.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/epoll.rs:8:12
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc::{self, c_int};
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/io.rs:5:5
[INFO] [stdout]     |
[INFO] [stdout] 5   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/tcp.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uio.rs:3:5
[INFO] [stdout]     |
[INFO] [stdout] 3   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/sys/unix/uds.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use libc;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iovec::IoVec`
[INFO] [stdout]   --> src/sys/unix/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub use iovec::IoVec;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/timer.rs:583:21
[INFO] [stdout]     |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `Duration` is already imported here
[INFO] [stdout] 583 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Instant` is imported redundantly
[INFO] [stdout]    --> src/timer.rs:583:31
[INFO] [stdout]     |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `Instant` is already imported here
[INFO] [stdout] 583 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `net2` is imported redundantly
[INFO] [stdout]  --> test/test_tcp.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use net2::{self, TcpStreamExt};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: test/mod.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate net2;
[INFO] [stdout]   | ------------------ the item `net2` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "584f10affc0ec96ad184ca0ddc01372016b7aba4cf2fcbfb6b0fcdf15d9808d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584f10affc0ec96ad184ca0ddc01372016b7aba4cf2fcbfb6b0fcdf15d9808d6", kill_on_drop: false }`
[INFO] [stdout] 584f10affc0ec96ad184ca0ddc01372016b7aba4cf2fcbfb6b0fcdf15d9808d6