[INFO] fetching crate poston 0.7.6... [INFO] checking poston-0.7.6 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate poston 0.7.6 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate poston 0.7.6 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] removed /workspace/builds/worker-2-tc1/source/rust-toolchain [INFO] started tweaking crates.io crate poston 0.7.6 [INFO] finished tweaking crates.io crate poston 0.7.6 [INFO] tweaked toml for crates.io crate poston 0.7.6 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate poston 0.7.6 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 backoff v0.4.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b71e426844179f4656d3c6688d7fa285a45dfa7307e74b205c16eba8e87c0b25 [INFO] running `Command { std: "docker" "start" "-a" "b71e426844179f4656d3c6688d7fa285a45dfa7307e74b205c16eba8e87c0b25", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b71e426844179f4656d3c6688d7fa285a45dfa7307e74b205c16eba8e87c0b25", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b71e426844179f4656d3c6688d7fa285a45dfa7307e74b205c16eba8e87c0b25", kill_on_drop: false }` [INFO] [stdout] b71e426844179f4656d3c6688d7fa285a45dfa7307e74b205c16eba8e87c0b25 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cf9bdaff0612e48d9f2a66f0a6a6c58056ddb2303e486d6745c79f29f769d779 [INFO] running `Command { std: "docker" "start" "-a" "cf9bdaff0612e48d9f2a66f0a6a6c58056ddb2303e486d6745c79f29f769d779", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Compiling serde v1.0.192 [INFO] [stderr] Compiling crossbeam-utils v0.8.16 [INFO] [stderr] Checking regex-syntax v0.8.2 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking instant v0.1.12 [INFO] [stderr] Checking termcolor v1.4.0 [INFO] [stderr] Compiling syn v2.0.39 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking crossbeam-channel v0.5.8 [INFO] [stderr] Checking aho-corasick v1.1.2 [INFO] [stderr] Checking getrandom v0.2.11 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking uuid v1.5.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rmp v0.8.12 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking backoff v0.4.0 [INFO] [stderr] Compiling serde_derive v1.0.192 [INFO] [stderr] Checking regex-automata v0.4.3 [INFO] [stderr] Checking rmp-serde v1.1.2 [INFO] [stderr] Checking regex v1.10.2 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking pretty_env_logger v0.4.0 [INFO] [stderr] Checking poston v0.7.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/connect.rs:285:9 [INFO] [stdout] | [INFO] [stdout] 285 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ConnectionSettings` is imported redundantly [INFO] [stdout] --> src/worker.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 118 | use super::*; [INFO] [stdout] | -------- the item `ConnectionSettings` is already imported here [INFO] [stdout] 119 | use crate::connect::ConnectionSettings; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly [INFO] [stdout] --> examples/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use pretty_env_logger; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> examples/main.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | use rand::{self, distributions::Alphanumeric}; [INFO] [stdout] | ^^^^ the item `rand` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/worker.rs:133:17 [INFO] [stdout] | [INFO] [stdout] 133 | addr.clone(), [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.85s [INFO] running `Command { std: "docker" "inspect" "cf9bdaff0612e48d9f2a66f0a6a6c58056ddb2303e486d6745c79f29f769d779", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cf9bdaff0612e48d9f2a66f0a6a6c58056ddb2303e486d6745c79f29f769d779", kill_on_drop: false }` [INFO] [stdout] cf9bdaff0612e48d9f2a66f0a6a6c58056ddb2303e486d6745c79f29f769d779 [INFO] checking poston-0.7.6 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate poston 0.7.6 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate poston 0.7.6 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] removed /workspace/builds/worker-2-tc2/source/rust-toolchain [INFO] started tweaking crates.io crate poston 0.7.6 [INFO] finished tweaking crates.io crate poston 0.7.6 [INFO] tweaked toml for crates.io crate poston 0.7.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate poston 0.7.6 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d164c7ee16bb89cbf371d26e7fd3e968a83bc754fd7e3874e616fc4d5a20681e [INFO] running `Command { std: "docker" "start" "-a" "d164c7ee16bb89cbf371d26e7fd3e968a83bc754fd7e3874e616fc4d5a20681e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d164c7ee16bb89cbf371d26e7fd3e968a83bc754fd7e3874e616fc4d5a20681e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d164c7ee16bb89cbf371d26e7fd3e968a83bc754fd7e3874e616fc4d5a20681e", kill_on_drop: false }` [INFO] [stdout] d164c7ee16bb89cbf371d26e7fd3e968a83bc754fd7e3874e616fc4d5a20681e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 943cb1fe80bb9eb7388831a3f7c15f7ab28e181893c94bf0d6091940eacc2d8d [INFO] running `Command { std: "docker" "start" "-a" "943cb1fe80bb9eb7388831a3f7c15f7ab28e181893c94bf0d6091940eacc2d8d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Compiling crossbeam-utils v0.8.16 [INFO] [stderr] Compiling serde v1.0.192 [INFO] [stderr] Checking regex-syntax v0.8.2 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking instant v0.1.12 [INFO] [stderr] Checking termcolor v1.4.0 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Compiling syn v2.0.39 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking aho-corasick v1.1.2 [INFO] [stderr] Checking crossbeam-channel v0.5.8 [INFO] [stderr] Checking getrandom v0.2.11 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking uuid v1.5.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking rmp v0.8.12 [INFO] [stderr] Compiling serde_derive v1.0.192 [INFO] [stderr] Checking backoff v0.4.0 [INFO] [stderr] Checking regex-automata v0.4.3 [INFO] [stderr] Checking rmp-serde v1.1.2 [INFO] [stderr] Checking regex v1.10.2 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking pretty_env_logger v0.4.0 [INFO] [stderr] Checking poston v0.7.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/connect.rs:285:9 [INFO] [stdout] | [INFO] [stdout] 285 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ConnectionSettings` is imported redundantly [INFO] [stdout] --> src/worker.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 118 | use super::*; [INFO] [stdout] | -------- the item `ConnectionSettings` is already imported here [INFO] [stdout] 119 | use crate::connect::ConnectionSettings; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly [INFO] [stdout] --> examples/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use pretty_env_logger; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> examples/main.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | use rand::{self, distributions::Alphanumeric}; [INFO] [stdout] | ^^^^ the item `rand` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/worker.rs:133:17 [INFO] [stdout] | [INFO] [stdout] 133 | addr.clone(), [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.09s [INFO] running `Command { std: "docker" "inspect" "943cb1fe80bb9eb7388831a3f7c15f7ab28e181893c94bf0d6091940eacc2d8d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "943cb1fe80bb9eb7388831a3f7c15f7ab28e181893c94bf0d6091940eacc2d8d", kill_on_drop: false }` [INFO] [stdout] 943cb1fe80bb9eb7388831a3f7c15f7ab28e181893c94bf0d6091940eacc2d8d