[INFO] fetching crate beanstalkc 1.0.0...
[INFO] checking beanstalkc-1.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate beanstalkc 1.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate beanstalkc 1.0.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate beanstalkc 1.0.0
[INFO] finished tweaking crates.io crate beanstalkc 1.0.0
[INFO] tweaked toml for crates.io crate beanstalkc 1.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate beanstalkc 1.0.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked-hash-map v0.5.1
[INFO] [stderr]   Downloaded dtoa v0.4.3
[INFO] [stderr]   Downloaded miniz_oxide v0.4.2
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded crc32fast v1.2.0
[INFO] [stderr]   Downloaded flate2 v1.0.18
[INFO] [stderr]   Downloaded serde v1.0.87
[INFO] [stderr]   Downloaded yaml-rust v0.4.2
[INFO] [stderr]   Downloaded libc v0.2.78
[INFO] [stderr]   Downloaded serde_yaml v0.8.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 329400a6ea0891d6f968e152267b5dd0c608fc516cfd8a00228c511627d13870
[INFO] running `Command { std: "docker" "start" "-a" "329400a6ea0891d6f968e152267b5dd0c608fc516cfd8a00228c511627d13870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "329400a6ea0891d6f968e152267b5dd0c608fc516cfd8a00228c511627d13870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329400a6ea0891d6f968e152267b5dd0c608fc516cfd8a00228c511627d13870", kill_on_drop: false }`
[INFO] [stdout] 329400a6ea0891d6f968e152267b5dd0c608fc516cfd8a00228c511627d13870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e5148bb342afcc0cf9f1597afb2657ebe8d2110b8e6cc140d27c4dd0b063a26
[INFO] running `Command { std: "docker" "start" "-a" "8e5148bb342afcc0cf9f1597afb2657ebe8d2110b8e6cc140d27c4dd0b063a26", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]     Checking flate2 v1.0.18
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking beanstalkc v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/command.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]  --> src/response.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_yaml;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_yaml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/command.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/command.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |     use super::*;
[INFO] [stdout]     |         -------- the item `Duration` is already imported here
[INFO] [stdout] 399 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]  --> src/response.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_yaml;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_yaml` is already defined by prelude
[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 2.24s
[INFO] running `Command { std: "docker" "inspect" "8e5148bb342afcc0cf9f1597afb2657ebe8d2110b8e6cc140d27c4dd0b063a26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e5148bb342afcc0cf9f1597afb2657ebe8d2110b8e6cc140d27c4dd0b063a26", kill_on_drop: false }`
[INFO] [stdout] 8e5148bb342afcc0cf9f1597afb2657ebe8d2110b8e6cc140d27c4dd0b063a26