[INFO] fetching crate ultraman 0.3.0...
[INFO] checking ultraman-0.3.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate ultraman 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate ultraman 0.3.0 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 ultraman 0.3.0
[INFO] finished tweaking crates.io crate ultraman 0.3.0
[INFO] tweaked toml for crates.io crate ultraman 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate ultraman 0.3.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded handlebars v4.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5973ec28feade7a6e8b113ebb76cb65111a7af601f63fb3ad3a77d156e391a2a
[INFO] running `Command { std: "docker" "start" "-a" "5973ec28feade7a6e8b113ebb76cb65111a7af601f63fb3ad3a77d156e391a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5973ec28feade7a6e8b113ebb76cb65111a7af601f63fb3ad3a77d156e391a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5973ec28feade7a6e8b113ebb76cb65111a7af601f63fb3ad3a77d156e391a2a", kill_on_drop: false }`
[INFO] [stdout] 5973ec28feade7a6e8b113ebb76cb65111a7af601f63fb3ad3a77d156e391a2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7362d00c0e4b0cb650a4a33bb1ff7ebe156315b7b4047a6d86451a63b9985aa3
[INFO] running `Command { std: "docker" "start" "-a" "7362d00c0e4b0cb650a4a33bb1ff7ebe156315b7b4047a6d86451a63b9985aa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking shellwords v1.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking handlebars v4.2.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking ultraman v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]  --> src/cmd/run.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nix::{self};
[INFO] [stdout]   |           ^^^^ the item `nix` 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 `dotenv` is imported redundantly
[INFO] [stdout]  --> src/env.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dotenv;
[INFO] [stdout]   |     ^^^^^^ the item `dotenv` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]  --> src/process.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nix::{self, unistd::Pid};
[INFO] [stdout]   |           ^^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]  --> src/cmd/run.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nix::{self};
[INFO] [stdout]   |           ^^^^ the item `nix` 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 `dotenv` is imported redundantly
[INFO] [stdout]  --> src/env.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dotenv;
[INFO] [stdout]   |     ^^^^^^ the item `dotenv` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]   --> src/log/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     use anyhow;
[INFO] [stdout]    |         ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]    --> src/output.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use anyhow;
[INFO] [stdout]     |         ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]  --> src/process.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nix::{self, unistd::Pid};
[INFO] [stdout]   |           ^^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/signal.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |     use libc;
[INFO] [stdout]     |         ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SIGINT` is imported redundantly
[INFO] [stdout]    --> src/signal.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     use super::*;
[INFO] [stdout]     |         -------- the item `SIGINT` is already imported here
[INFO] [stdout] 188 |     use libc;
[INFO] [stdout] 189 |     use signal_hook::consts::signal::SIGINT;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sleep` is imported redundantly
[INFO] [stdout]    --> src/signal.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     use super::*;
[INFO] [stdout]     |         -------- the item `sleep` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 191 |     use std::thread::sleep;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/signal.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     use super::*;
[INFO] [stdout]     |         -------- the item `Duration` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 192 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]   --> src/stream_read.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     use anyhow;
[INFO] [stdout]    |         ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `chown` is never used
[INFO] [stdout]   --> src/cmd/export/base.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub trait Exportable {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn chown(&self, username: &str, dir: &PathBuf) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `opts` is never read
[INFO] [stdout]   --> src/process.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Process {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub opts: Option<DisplayOpts>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&std::string::String` instead of cloning the inner type
[INFO] [stdout]   --> src/procfile.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 |             .all(|key| self.data.contains_key(key.clone()));
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `chown` is never used
[INFO] [stdout]   --> src/cmd/export/base.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub trait Exportable {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn chown(&self, username: &str, dir: &PathBuf) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `opts` is never read
[INFO] [stdout]   --> src/process.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Process {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub opts: Option<DisplayOpts>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&std::string::String` instead of cloning the inner type
[INFO] [stdout]   --> src/procfile.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 |             .all(|key| self.data.contains_key(key.clone()));
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.80s
[INFO] running `Command { std: "docker" "inspect" "7362d00c0e4b0cb650a4a33bb1ff7ebe156315b7b4047a6d86451a63b9985aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7362d00c0e4b0cb650a4a33bb1ff7ebe156315b7b4047a6d86451a63b9985aa3", kill_on_drop: false }`
[INFO] [stdout] 7362d00c0e4b0cb650a4a33bb1ff7ebe156315b7b4047a6d86451a63b9985aa3