[INFO] fetching crate barb 0.4.3...
[INFO] checking barb-0.4.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate barb 0.4.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate barb 0.4.3 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 barb 0.4.3
[INFO] finished tweaking crates.io crate barb 0.4.3
[INFO] tweaked toml for crates.io crate barb 0.4.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate barb 0.4.3 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 flate2 v1.0.22
[INFO] [stderr]   Downloaded jsonpath-rust v0.1.4
[INFO] [stderr]   Downloaded block-padding v0.1.5
[INFO] [stderr]   Downloaded byte-tools v0.3.1
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[INFO] [stderr]   Downloaded sha-1 v0.8.2
[INFO] [stderr]   Downloaded pest_generator v2.1.3
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[INFO] [stderr]   Downloaded pest_meta v2.1.3
[INFO] [stderr]   Downloaded clap_derive v3.0.14
[INFO] [stderr]   Downloaded textwrap v0.14.2
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[INFO] [stderr]   Downloaded jq-sys v0.2.2
[INFO] [stderr]   Downloaded webpki-roots v0.22.2
[INFO] [stderr]   Downloaded libc v0.2.118
[INFO] [stderr]   Downloaded regex-syntax v0.6.25
[INFO] [stderr]   Downloaded regex v1.5.4
[INFO] [stderr]   Downloaded rustls v0.20.3
[INFO] [stderr]   Downloaded ucd-trie v0.1.3
[INFO] [stderr]   Downloaded pest v2.1.3
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[INFO] [stderr]   Downloaded colored_json v2.1.0
[INFO] [stderr]   Downloaded dotenv v0.15.0
[INFO] [stderr]   Downloaded jq-rs v0.4.1
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[INFO] [stderr]   Downloaded digest v0.8.1
[INFO] [stderr]   Downloaded pest_derive v2.1.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2341af28c3601c5ac8d31add780f748e1d46ba775772822cdab22994230e743
[INFO] running `Command { std: "docker" "start" "-a" "f2341af28c3601c5ac8d31add780f748e1d46ba775772822cdab22994230e743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2341af28c3601c5ac8d31add780f748e1d46ba775772822cdab22994230e743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2341af28c3601c5ac8d31add780f748e1d46ba775772822cdab22994230e743", kill_on_drop: false }`
[INFO] [stdout] f2341af28c3601c5ac8d31add780f748e1d46ba775772822cdab22994230e743
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 679377838c111feeb486262eb507dbbb4b742faa5548dc54798d1233f1e3dd76
[INFO] running `Command { std: "docker" "start" "-a" "679377838c111feeb486262eb507dbbb4b742faa5548dc54798d1233f1e3dd76", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling rustls v0.20.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking jsonformat v1.2.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.2
[INFO] [stderr]     Checking colored_json v2.1.0
[INFO] [stderr]    Compiling clap_derive v3.0.14
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking jsonpath-rust v0.1.4
[INFO] [stderr]     Checking ureq v2.4.0
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking barb v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Eq` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                ^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Eq` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ord` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                    ^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Ord` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialEq` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialEq` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:46
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                                              ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Eq` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                ^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Eq` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ord` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                    ^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Ord` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialEq` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialEq` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:4:46
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
[INFO] [stdout]   |                                              ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/barbfile.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.06s
[INFO] running `Command { std: "docker" "inspect" "679377838c111feeb486262eb507dbbb4b742faa5548dc54798d1233f1e3dd76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "679377838c111feeb486262eb507dbbb4b742faa5548dc54798d1233f1e3dd76", kill_on_drop: false }`
[INFO] [stdout] 679377838c111feeb486262eb507dbbb4b742faa5548dc54798d1233f1e3dd76