[INFO] fetching crate repomon 0.1.1...
[INFO] checking repomon-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate repomon 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate repomon 0.1.1 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 repomon 0.1.1
[INFO] finished tweaking crates.io crate repomon 0.1.1
[INFO] tweaked toml for crates.io crate repomon 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages
[INFO] [stderr]       Adding aho-corasick v0.6.10 (latest: v1.1.3)
[INFO] [stderr]       Adding bincode v0.9.2 (latest: v1.3.3)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding idna v0.1.5 (latest: v0.5.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding regex v0.2.11 (latest: v1.10.4)
[INFO] [stderr]       Adding regex-syntax v0.5.6 (latest: v0.8.3)
[INFO] [stderr]       Adding sha1 v0.6.1 (latest: v0.10.6)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding thread_local v0.3.6 (latest: v1.1.8)
[INFO] [stderr]       Adding ucd-util v0.1.10 (latest: v0.2.1)
[INFO] [stderr]       Adding url v1.7.2 (latest: v2.5.0)
[INFO] [stderr]       Adding uuid v0.6.5 (latest: v1.8.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fe66e0831bd3c45508b8a7405200c209c6b6d394fb97d35cf2fcc09a4c7c9199
[INFO] running `Command { std: "docker" "start" "-a" "fe66e0831bd3c45508b8a7405200c209c6b6d394fb97d35cf2fcc09a4c7c9199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe66e0831bd3c45508b8a7405200c209c6b6d394fb97d35cf2fcc09a4c7c9199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe66e0831bd3c45508b8a7405200c209c6b6d394fb97d35cf2fcc09a4c7c9199", kill_on_drop: false }`
[INFO] [stdout] fe66e0831bd3c45508b8a7405200c209c6b6d394fb97d35cf2fcc09a4c7c9199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 75de73712c5ddc73a72d5f89832b32003608aa1ebb8478d326c79a4c16411dbe
[INFO] running `Command { std: "docker" "start" "-a" "75de73712c5ddc73a72d5f89832b32003608aa1ebb8478d326c79a4c16411dbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking sha1 v0.6.1
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking toml_edit v0.22.9
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]     Checking repomon v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]    --> src/config.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout] 15  | use toml;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | extern crate toml;
[INFO] [stdout]     | ------------------ the item `toml` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]    --> src/config.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout] 15  | use toml;
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | extern crate toml;
[INFO] [stdout]     | ------------------ the item `toml` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]    --> src/config.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |     use toml;
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | extern crate toml;
[INFO] [stdout]     | ------------------ the item `toml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `uuid` is imported redundantly
[INFO] [stdout]    --> src/message.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |     use uuid::{self, Uuid};
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | extern crate uuid;
[INFO] [stdout]     | ------------------ the item `uuid` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning 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 2.74s
[INFO] running `Command { std: "docker" "inspect" "75de73712c5ddc73a72d5f89832b32003608aa1ebb8478d326c79a4c16411dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75de73712c5ddc73a72d5f89832b32003608aa1ebb8478d326c79a4c16411dbe", kill_on_drop: false }`
[INFO] [stdout] 75de73712c5ddc73a72d5f89832b32003608aa1ebb8478d326c79a4c16411dbe