[INFO] fetching crate subscriber-rs 0.0.1... [INFO] checking subscriber-rs-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate subscriber-rs 0.0.1 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate subscriber-rs 0.0.1 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 subscriber-rs 0.0.1 [INFO] finished tweaking crates.io crate subscriber-rs 0.0.1 [INFO] tweaked toml for crates.io crate subscriber-rs 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate crates.io crate subscriber-rs 0.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c82efa301ed78364f2e00244280acf6c606ae399814b5479a3b4877a6fd45a52 [INFO] running `Command { std: "docker" "start" "-a" "c82efa301ed78364f2e00244280acf6c606ae399814b5479a3b4877a6fd45a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c82efa301ed78364f2e00244280acf6c606ae399814b5479a3b4877a6fd45a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c82efa301ed78364f2e00244280acf6c606ae399814b5479a3b4877a6fd45a52", kill_on_drop: false }` [INFO] [stdout] c82efa301ed78364f2e00244280acf6c606ae399814b5479a3b4877a6fd45a52 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 398518d4c9b534f892ca062816612a773a81f992bbd707f085c24c6fee9acb45 [INFO] running `Command { std: "docker" "start" "-a" "398518d4c9b534f892ca062816612a773a81f992bbd707f085c24c6fee9acb45", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.37 [INFO] [stderr] Compiling libc v0.2.122 [INFO] [stderr] Compiling syn v1.0.91 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Compiling log v0.4.16 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Compiling parking_lot_core v0.9.2 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Checking slab v0.4.6 [INFO] [stderr] Compiling lock_api v0.4.7 [INFO] [stderr] Checking smallvec v1.8.0 [INFO] [stderr] Checking futures-io v0.3.21 [INFO] [stderr] Checking once_cell v1.10.0 [INFO] [stderr] Compiling anyhow v1.0.56 [INFO] [stderr] Compiling quote v1.0.17 [INFO] [stderr] Checking mio v0.8.2 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking parking_lot v0.12.0 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stderr] Checking tokio v1.17.0 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking futures v0.3.21 [INFO] [stderr] Checking subscriber-rs v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/subscribers.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/subscribers.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> examples/simple.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SubscribeHandle` [INFO] [stdout] --> examples/simple.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | SubscribeHandle, Subscriber, SubscriberCallback, SubscriberError, SubscriberEvent, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/simple.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let mut server: SubscriberServer> = [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.71s [INFO] running `Command { std: "docker" "inspect" "398518d4c9b534f892ca062816612a773a81f992bbd707f085c24c6fee9acb45", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "398518d4c9b534f892ca062816612a773a81f992bbd707f085c24c6fee9acb45", kill_on_drop: false }` [INFO] [stdout] 398518d4c9b534f892ca062816612a773a81f992bbd707f085c24c6fee9acb45 [INFO] checking subscriber-rs-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate subscriber-rs 0.0.1 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate subscriber-rs 0.0.1 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 subscriber-rs 0.0.1 [INFO] finished tweaking crates.io crate subscriber-rs 0.0.1 [INFO] tweaked toml for crates.io crate subscriber-rs 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate crates.io crate subscriber-rs 0.0.1 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 887127cb3a2728e928fb52e297964f584f4aecd6ec02a3a5ebf61a82f0b5237e [INFO] running `Command { std: "docker" "start" "-a" "887127cb3a2728e928fb52e297964f584f4aecd6ec02a3a5ebf61a82f0b5237e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "887127cb3a2728e928fb52e297964f584f4aecd6ec02a3a5ebf61a82f0b5237e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "887127cb3a2728e928fb52e297964f584f4aecd6ec02a3a5ebf61a82f0b5237e", kill_on_drop: false }` [INFO] [stdout] 887127cb3a2728e928fb52e297964f584f4aecd6ec02a3a5ebf61a82f0b5237e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 22e7ec1b78660312deec70da6458ec2fb91a43b96d55a96a58b360791fda3557 [INFO] running `Command { std: "docker" "start" "-a" "22e7ec1b78660312deec70da6458ec2fb91a43b96d55a96a58b360791fda3557", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.37 [INFO] [stderr] Compiling libc v0.2.122 [INFO] [stderr] Compiling syn v1.0.91 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling log v0.4.16 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling parking_lot_core v0.9.2 [INFO] [stderr] Checking smallvec v1.8.0 [INFO] [stderr] Compiling lock_api v0.4.7 [INFO] [stderr] Checking futures-io v0.3.21 [INFO] [stderr] Checking slab v0.4.6 [INFO] [stderr] Checking once_cell v1.10.0 [INFO] [stderr] Compiling anyhow v1.0.56 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking mio v0.8.2 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Compiling quote v1.0.17 [INFO] [stderr] Checking parking_lot v0.12.0 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stderr] Checking tokio v1.17.0 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking futures v0.3.21 [INFO] [stderr] Checking subscriber-rs v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/subscribers.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/subscribers.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> examples/simple.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SubscribeHandle` [INFO] [stdout] --> examples/simple.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | SubscribeHandle, Subscriber, SubscriberCallback, SubscriberError, SubscriberEvent, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/simple.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let mut server: SubscriberServer> = [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.71s [INFO] running `Command { std: "docker" "inspect" "22e7ec1b78660312deec70da6458ec2fb91a43b96d55a96a58b360791fda3557", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "22e7ec1b78660312deec70da6458ec2fb91a43b96d55a96a58b360791fda3557", kill_on_drop: false }` [INFO] [stdout] 22e7ec1b78660312deec70da6458ec2fb91a43b96d55a96a58b360791fda3557