[INFO] fetching crate apt-cmd 0.3.0...
[INFO] checking apt-cmd-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate apt-cmd 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate apt-cmd 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 apt-cmd 0.3.0
[INFO] finished tweaking crates.io crate apt-cmd 0.3.0
[INFO] tweaked toml for crates.io crate apt-cmd 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate apt-cmd 0.3.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.30
[INFO] [stderr]   Downloaded thread_local v1.1.3
[INFO] [stderr]   Downloaded smolscale v0.3.16
[INFO] [stderr]   Downloaded proc-macro2 v1.0.33
[INFO] [stderr]   Downloaded quote v1.0.10
[INFO] [stderr]   Downloaded unicode-xid v0.2.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.19
[INFO] [stderr]   Downloaded num_cpus v1.13.0
[INFO] [stderr]   Downloaded futures-sink v0.3.19
[INFO] [stderr]   Downloaded once_cell v1.8.0
[INFO] [stderr]   Downloaded log v0.4.14
[INFO] [stderr]   Downloaded parking v2.0.0
[INFO] [stderr]   Downloaded fastrand v1.5.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.5
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded block-buffer v0.10.0
[INFO] [stderr]   Downloaded as-result v0.2.1
[INFO] [stderr]   Downloaded nanorand v0.6.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]   Downloaded signal-hook-registry v1.4.0
[INFO] [stderr]   Downloaded async-mutex v1.4.0
[INFO] [stderr]   Downloaded bumpalo v3.8.0
[INFO] [stderr]   Downloaded idna v0.2.3
[INFO] [stderr]   Downloaded gimli v0.26.1
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.78
[INFO] [stderr]   Downloaded futures-util v0.3.19
[INFO] [stderr]   Downloaded async-lock v2.4.0
[INFO] [stderr]   Downloaded async-fs v1.5.0
[INFO] [stderr]   Downloaded libz-sys v1.1.3
[INFO] [stderr]   Downloaded encoding_rs v0.8.30
[INFO] [stderr]   Downloaded atomic-waker v1.0.0
[INFO] [stderr]   Downloaded blocking v1.1.0
[INFO] [stderr]   Downloaded signal-hook v0.3.12
[INFO] [stderr]   Downloaded crypto-common v0.1.0
[INFO] [stderr]   Downloaded async-process v1.3.0
[INFO] [stderr]   Downloaded async-stream v0.3.2
[INFO] [stderr]   Downloaded semver v1.0.4
[INFO] [stderr]   Downloaded curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]   Downloaded js-sys v0.3.55
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.78
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded flume v0.10.9
[INFO] [stderr]   Downloaded futures-task v0.3.19
[INFO] [stderr]   Downloaded pkg-config v0.3.24
[INFO] [stderr]   Downloaded http v0.2.5
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.7+1.45.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.19
[INFO] [stderr]   Downloaded percent-encoding v2.1.0
[INFO] [stderr]   Downloaded crc32fast v1.3.0
[INFO] [stderr]   Downloaded procfs v0.12.0
[INFO] [stderr]   Downloaded async-task v4.0.3
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.5
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.78
[INFO] [stderr]   Downloaded openssl-probe v0.1.4
[INFO] [stderr]   Downloaded schannel v0.1.19
[INFO] [stderr]   Downloaded curl v0.4.41
[INFO] [stderr]   Downloaded openssl-sys v0.9.72
[INFO] [stderr]   Downloaded bytes v1.1.0
[INFO] [stderr]   Downloaded mime v0.3.16
[INFO] [stderr]   Downloaded pin-project-internal v1.0.8
[INFO] [stderr]   Downloaded pin-project v1.0.8
[INFO] [stderr]   Downloaded tracing-attributes v0.1.18
[INFO] [stderr]   Downloaded tracing-core v0.1.21
[INFO] [stderr]   Downloaded tracing v0.1.29
[INFO] [stderr]   Downloaded form_urlencoded v1.0.1
[INFO] [stderr]   Downloaded unicode-bidi v0.3.7
[INFO] [stderr]   Downloaded matches v0.1.9
[INFO] [stderr]   Downloaded version_check v0.9.3
[INFO] [stderr]   Downloaded generic-array v0.14.4
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded polling v2.2.0
[INFO] [stderr]   Downloaded async-oneshot v0.4.2
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded futures v0.3.19
[INFO] [stderr]   Downloaded futures-macro v0.3.19
[INFO] [stderr]   Downloaded tinyvec_macros v0.1.0
[INFO] [stderr]   Downloaded memoffset v0.6.5
[INFO] [stderr]   Downloaded async-barrier v1.1.0
[INFO] [stderr]   Downloaded async-stream-impl v0.3.2
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.78
[INFO] [stderr]   Downloaded tinyvec v1.5.1
[INFO] [stderr]   Downloaded chrono v0.4.19
[INFO] [stderr]   Downloaded flate2 v1.0.22
[INFO] [stderr]   Downloaded cpufeatures v0.2.1
[INFO] [stderr]   Downloaded typenum v1.14.0
[INFO] [stderr]   Downloaded async-io v1.6.0
[INFO] [stderr]   Downloaded futures-micro v0.3.1
[INFO] [stderr]   Downloaded backtrace v0.3.63
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded miniz_oxide v0.4.4
[INFO] [stderr]   Downloaded concurrent-queue v1.2.2
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded event-listener v2.5.1
[INFO] [stderr]   Downloaded smallvec v1.7.0
[INFO] [stderr]   Downloaded futures-executor v0.3.19
[INFO] [stderr]   Downloaded futures-channel v0.3.19
[INFO] [stderr]   Downloaded url v2.2.2
[INFO] [stderr]   Downloaded isahc v1.6.0
[INFO] [stderr]   Downloaded md-5 v0.10.0
[INFO] [stderr]   Downloaded byteorder v1.4.3
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded time v0.1.43
[INFO] [stderr]   Downloaded digest v0.10.0
[INFO] [stderr]   Downloaded anyhow v1.0.52
[INFO] [stderr]   Downloaded async-executor v1.4.1
[INFO] [stderr]   Downloaded sha-1 v0.10.0
[INFO] [stderr]   Downloaded async-channel v1.6.1
[INFO] [stderr]   Downloaded socket2 v0.4.2
[INFO] [stderr]   Downloaded lock_api v0.4.5
[INFO] [stderr]   Downloaded redox_syscall v0.2.10
[INFO] [stderr]   Downloaded waker-fn v1.1.0
[INFO] [stderr]   Downloaded libc v0.2.111
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.1
[INFO] [stderr]   Downloaded parking_lot_core v0.8.5
[INFO] [stderr]   Downloaded futures-intrusive v0.4.0
[INFO] [stderr]   Downloaded futures-io v0.3.19
[INFO] [stderr]   Downloaded memchr v2.4.1
[INFO] [stderr]   Downloaded futures-core v0.3.19
[INFO] [stderr]   Downloaded pin-project-lite v0.2.7
[INFO] [stderr]   Downloaded rtrb v0.1.4
[INFO] [stderr]   Downloaded slab v0.4.5
[INFO] [stderr]   Downloaded futures-lite v1.12.0
[INFO] [stderr]   Downloaded cache-padded v1.1.1
[INFO] [stderr]   Downloaded scopeguard v1.1.0
[INFO] [stderr]   Downloaded syn v1.0.82
[INFO] [stderr]   Downloaded thiserror-impl v1.0.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 225bdea4aa403d0986d49ce173a4bc5474b569a4be212c162a25e598e47b2a9e
[INFO] running `Command { std: "docker" "start" "-a" "225bdea4aa403d0986d49ce173a4bc5474b569a4be212c162a25e598e47b2a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "225bdea4aa403d0986d49ce173a4bc5474b569a4be212c162a25e598e47b2a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "225bdea4aa403d0986d49ce173a4bc5474b569a4be212c162a25e598e47b2a9e", kill_on_drop: false }`
[INFO] [stdout] 225bdea4aa403d0986d49ce173a4bc5474b569a4be212c162a25e598e47b2a9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] eb2886a2b277ca546f59857ac9a8a47afa90d7381fe5dda70ee69dd233bcf00d
[INFO] running `Command { std: "docker" "start" "-a" "eb2886a2b277ca546f59857ac9a8a47afa90d7381fe5dda70ee69dd233bcf00d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.111
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling curl v0.4.41
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling signal-hook v0.3.12
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.7+1.45.0
[INFO] [stderr]    Compiling curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling isahc v1.6.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-oneshot v0.4.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking blocking v1.1.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking futures-intrusive v0.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking rtrb v0.1.4
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking block-buffer v0.10.0
[INFO] [stderr]     Checking crypto-common v0.1.0
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-barrier v1.1.0
[INFO] [stderr]     Checking async-process v1.3.0
[INFO] [stderr]     Checking as-result v0.2.1
[INFO] [stderr]     Checking digest v0.10.0
[INFO] [stderr]     Checking procfs v0.12.0
[INFO] [stderr]     Checking md-5 v0.10.0
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking smolscale v0.3.16
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking flume v0.10.9
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking apt-cmd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt_cache.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 9 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 8 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt_cache.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 9 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 8 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]  --> examples/upgradable.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let (child, packages) = apt_cmd::apt::upgradable_packages().await?;
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.91s
[INFO] running `Command { std: "docker" "inspect" "eb2886a2b277ca546f59857ac9a8a47afa90d7381fe5dda70ee69dd233bcf00d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2886a2b277ca546f59857ac9a8a47afa90d7381fe5dda70ee69dd233bcf00d", kill_on_drop: false }`
[INFO] [stdout] eb2886a2b277ca546f59857ac9a8a47afa90d7381fe5dda70ee69dd233bcf00d
[INFO] checking apt-cmd-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate apt-cmd 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate apt-cmd 0.3.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate apt-cmd 0.3.0
[INFO] finished tweaking crates.io crate apt-cmd 0.3.0
[INFO] tweaked toml for crates.io crate apt-cmd 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate apt-cmd 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfa28791d555f660a44db8443eeb9b8277f1358dabbbc55f95096a24250f957c
[INFO] running `Command { std: "docker" "start" "-a" "dfa28791d555f660a44db8443eeb9b8277f1358dabbbc55f95096a24250f957c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfa28791d555f660a44db8443eeb9b8277f1358dabbbc55f95096a24250f957c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa28791d555f660a44db8443eeb9b8277f1358dabbbc55f95096a24250f957c", kill_on_drop: false }`
[INFO] [stdout] dfa28791d555f660a44db8443eeb9b8277f1358dabbbc55f95096a24250f957c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc872a4a14ab6a5e0d36df23506e68facf010fc159531b9cbde87f939e770a8b
[INFO] running `Command { std: "docker" "start" "-a" "bc872a4a14ab6a5e0d36df23506e68facf010fc159531b9cbde87f939e770a8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.111
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling curl v0.4.41
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling signal-hook v0.3.12
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.7+1.45.0
[INFO] [stderr]    Compiling curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling isahc v1.6.0
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking futures-intrusive v0.4.0
[INFO] [stderr]     Checking async-oneshot v0.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking blocking v1.1.0
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking rtrb v0.1.4
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-barrier v1.1.0
[INFO] [stderr]     Checking async-process v1.3.0
[INFO] [stderr]     Checking as-result v0.2.1
[INFO] [stderr]     Checking procfs v0.12.0
[INFO] [stderr]     Checking block-buffer v0.10.0
[INFO] [stderr]     Checking crypto-common v0.1.0
[INFO] [stderr]     Checking digest v0.10.0
[INFO] [stderr]     Checking md-5 v0.10.0
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking smolscale v0.3.16
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking flume v0.10.9
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking apt-cmd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt_cache.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 9 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt_cache.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 9 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 8 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/apt.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `Stream` is already imported here
[INFO] [stdout] 8 | use futures::stream::{Stream, StreamExt};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]  --> examples/upgradable.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let (child, packages) = apt_cmd::apt::upgradable_packages().await?;
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.98s
[INFO] running `Command { std: "docker" "inspect" "bc872a4a14ab6a5e0d36df23506e68facf010fc159531b9cbde87f939e770a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc872a4a14ab6a5e0d36df23506e68facf010fc159531b9cbde87f939e770a8b", kill_on_drop: false }`
[INFO] [stdout] bc872a4a14ab6a5e0d36df23506e68facf010fc159531b9cbde87f939e770a8b