[INFO] cloning repository https://github.com/arenmn/chair
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arenmn/chair" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farenmn%2Fchair", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farenmn%2Fchair'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c099edcaa8788fe4b47c7f1d2811984dde1a48ad
[INFO] checking arenmn/chair against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farenmn%2Fchair" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arenmn/chair
[INFO] finished tweaking git repo https://github.com/arenmn/chair
[INFO] tweaked toml for git repo https://github.com/arenmn/chair written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arenmn/chair on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arenmn/chair 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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking arenmn/chair against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farenmn%2Fchair" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arenmn/chair
[INFO] finished tweaking git repo https://github.com/arenmn/chair
[INFO] tweaked toml for git repo https://github.com/arenmn/chair written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arenmn/chair on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arenmn/chair 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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b
[INFO] running `Command { std: "docker" "start" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b", 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" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b", 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" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking chair v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/codegen/x64_elf.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/codegen/x64_elf.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Relocation` is more private than the item `CompilerX64Elf::relocations`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) relocations: Vec<Relocation>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CompilerX64Elf::relocations` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Relocation` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Relocation {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Symbol` is more private than the item `CompilerX64Elf::symbols`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) symbols: Vec<Symbol>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CompilerX64Elf::symbols` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Symbol` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Symbol {
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `globals` are never read
[INFO] [stdout]   --> src/ir/mod.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct TranslationUnit {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout]  8 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]  9 |     pub(crate) functions: HashMap<String, Function>,
[INFO] [stdout] 10 |     pub(crate) globals: HashMap<String, Value>
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/ir/mod.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Block {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn from(instructions: Vec<Instruction>, terminator: Terminator) -> Block {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Jump` is never constructed
[INFO] [stdout]    --> src/ir/mod.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub enum Terminator {
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] 117 |     Jump(Box<Block>),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Terminator` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dst_section` is never read
[INFO] [stdout]   --> src/codegen/x64_elf.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Relocation {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] 13 |     src_symbol: usize,
[INFO] [stdout] 14 |     dst_section: Section,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Relocation` is more private than the item `CompilerX64Elf::relocations`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) relocations: Vec<Relocation>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CompilerX64Elf::relocations` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Relocation` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Relocation {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Symbol` is more private than the item `CompilerX64Elf::symbols`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) symbols: Vec<Symbol>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CompilerX64Elf::symbols` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Symbol` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/codegen/x64_elf.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Symbol {
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `globals` are never read
[INFO] [stdout]   --> src/ir/mod.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct TranslationUnit {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout]  8 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]  9 |     pub(crate) functions: HashMap<String, Function>,
[INFO] [stdout] 10 |     pub(crate) globals: HashMap<String, Value>
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/ir/mod.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Block {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn from(instructions: Vec<Instruction>, terminator: Terminator) -> Block {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Jump` is never constructed
[INFO] [stdout]    --> src/ir/mod.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub enum Terminator {
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] 117 |     Jump(Box<Block>),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Terminator` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dst_section` is never read
[INFO] [stdout]   --> src/codegen/x64_elf.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Relocation {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] 13 |     src_symbol: usize,
[INFO] [stdout] 14 |     dst_section: Section,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b", kill_on_drop: false }`
[INFO] [stdout] 1c5b85936cb094ea18c8db4a1af8cd0b58585be767b986f65cd4a1b21b91978b
