[INFO] cloning repository https://github.com/Interfiber/pack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Interfiber/pack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInterfiber%2Fpack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInterfiber%2Fpack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 227011f55532b6fa0c8fbab1245170991d926c9a
[INFO] checking Interfiber/pack against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInterfiber%2Fpack" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Interfiber/pack on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Interfiber/pack
[INFO] finished tweaking git repo https://github.com/Interfiber/pack
[INFO] tweaked toml for git repo https://github.com/Interfiber/pack written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Interfiber/pack already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97178f0ea4f4e74649c9a92bc4774a890ed9c4fb074239f9eb95aadae73c9d26
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97178f0ea4f4e74649c9a92bc4774a890ed9c4fb074239f9eb95aadae73c9d26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97178f0ea4f4e74649c9a92bc4774a890ed9c4fb074239f9eb95aadae73c9d26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97178f0ea4f4e74649c9a92bc4774a890ed9c4fb074239f9eb95aadae73c9d26", kill_on_drop: false }`
[INFO] [stdout] 97178f0ea4f4e74649c9a92bc4774a890ed9c4fb074239f9eb95aadae73c9d26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c607779019c6b3cc7197d4eba2596f1e574a31766d97db7ebb36d29b202928e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c607779019c6b3cc7197d4eba2596f1e574a31766d97db7ebb36d29b202928e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking pack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/install.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/install.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]   --> src/install.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 |   let mut output = "";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `check_stderr`
[INFO] [stdout]   --> src/install.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 |   let check_stderr = String::from_utf8_lossy(&check_cmd.stderr);
[INFO] [stdout]    |       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_check_stderr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/install.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     Err(err) => println!("⚠️   Warning! Failed to remove .download_complete")
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]   --> src/install.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 |   let mut output = "";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `check_stderr`
[INFO] [stdout]   --> src/install.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 |   let check_stderr = String::from_utf8_lossy(&check_cmd.stderr);
[INFO] [stdout]    |       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_check_stderr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/install.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     Err(err) => println!("⚠️   Warning! Failed to remove .download_complete")
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `PACK_DIR` should have a snake case name
[INFO] [stdout]  --> src/install.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let PACK_DIR = get_pack_home();
[INFO] [stdout]   |       ^^^^^^^^ help: convert the identifier to snake case: `pack_dir`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `PACK_DIR` should have a snake case name
[INFO] [stdout]  --> src/install.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let PACK_DIR = get_pack_home();
[INFO] [stdout]   |       ^^^^^^^^ help: convert the identifier to snake case: `pack_dir`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.52s
[INFO] running `Command { std: "docker" "inspect" "1c607779019c6b3cc7197d4eba2596f1e574a31766d97db7ebb36d29b202928e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c607779019c6b3cc7197d4eba2596f1e574a31766d97db7ebb36d29b202928e", kill_on_drop: false }`
[INFO] [stdout] 1c607779019c6b3cc7197d4eba2596f1e574a31766d97db7ebb36d29b202928e