[INFO] cloning repository https://github.com/udayj/tailr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/udayj/tailr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudayj%2Ftailr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudayj%2Ftailr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9359a73633d387697c141a70253ab8fa6fba1f98
[INFO] checking udayj/tailr against master#ff647322379c48947c196639599067665ff9eb88 for pr-151539-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudayj%2Ftailr" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/udayj/tailr
[INFO] finished tweaking git repo https://github.com/udayj/tailr
[INFO] tweaked toml for git repo https://github.com/udayj/tailr written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/udayj/tailr on toolchain ff647322379c48947c196639599067665ff9eb88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/udayj/tailr 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" "+ff647322379c48947c196639599067665ff9eb88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded once_cell v1.17.1
[INFO] [stderr]   Downloaded anstyle v0.3.5
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded assert_cmd v2.0.10
[INFO] [stderr]   Downloaded num-complex v0.4.3
[INFO] [stderr]   Downloaded predicates v3.0.2
[INFO] [stderr]   Downloaded serde v1.0.159
[INFO] [stderr]   Downloaded aho-corasick v0.7.20
[INFO] [stderr]   Downloaded regex v1.7.3
[INFO] [stderr]   Downloaded bstr v1.4.0
[INFO] [stderr]   Downloaded libc v0.2.140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9
[INFO] running `Command { std: "docker" "start" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9" "/opt/rustwide/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9" "/opt/rustwide/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking anstyle v0.3.5
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking bstr v1.4.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]     Checking predicates v3.0.2
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking assert_cmd v2.0.10
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking tailr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, BufRead, BufReader};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, BufRead, BufReader};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut x;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let mut x;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lines`, `bytes`, and `quiet` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Config {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     lines: TakeValue,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     bytes: Option<TakeValue>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     quiet: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_num` is never used
[INFO] [stdout]    --> src/lib.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn parse_num(num: &String) -> MyResult<TakeValue> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut x;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let mut x;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lines`, `bytes`, and `quiet` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Config {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     lines: TakeValue,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     bytes: Option<TakeValue>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     quiet: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_num` is never used
[INFO] [stdout]    --> src/lib.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn parse_num(num: &String) -> MyResult<TakeValue> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.23s
[INFO] running `Command { std: "docker" "inspect" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9", kill_on_drop: false }`
[INFO] [stdout] addfe90f954e6353a993f9916a00ad7fa1093a9113a852b63dac7045d70278d9
