[INFO] cloning repository https://github.com/Sooh317/rust_mycc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sooh317/rust_mycc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSooh317%2Frust_mycc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSooh317%2Frust_mycc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae731a24c44a12db5dd48fc20e243ccd7ad6293e
[INFO] checking Sooh317/rust_mycc against master#30840c53f414b753cb08f14620906572f88dda4b for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSooh317%2Frust_mycc" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sooh317/rust_mycc on toolchain 30840c53f414b753cb08f14620906572f88dda4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30840c53f414b753cb08f14620906572f88dda4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] finished tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] tweaked toml for git repo https://github.com/Sooh317/rust_mycc written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Sooh317/rust_mycc 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" "+30840c53f414b753cb08f14620906572f88dda4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Sooh317/rust_mycc against try#18fb860b8a8e7ca508746882328061d0fe352543 for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSooh317%2Frust_mycc" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sooh317/rust_mycc on toolchain 18fb860b8a8e7ca508746882328061d0fe352543
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] finished tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] tweaked toml for git repo https://github.com/Sooh317/rust_mycc written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Sooh317/rust_mycc 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" "+18fb860b8a8e7ca508746882328061d0fe352543" "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 Sooh317/rust_mycc against try#18fb860b8a8e7ca508746882328061d0fe352543 for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSooh317%2Frust_mycc" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sooh317/rust_mycc on toolchain 18fb860b8a8e7ca508746882328061d0fe352543
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] finished tweaking git repo https://github.com/Sooh317/rust_mycc
[INFO] tweaked toml for git repo https://github.com/Sooh317/rust_mycc written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Sooh317/rust_mycc 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" "+18fb860b8a8e7ca508746882328061d0fe352543" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4a6593578cd355e44c87d0ba1a2b85ad174e3ebdc24d1a021c498534906eb5e
[INFO] running `Command { std: "docker" "start" "-a" "f4a6593578cd355e44c87d0ba1a2b85ad174e3ebdc24d1a021c498534906eb5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4a6593578cd355e44c87d0ba1a2b85ad174e3ebdc24d1a021c498534906eb5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a6593578cd355e44c87d0ba1a2b85ad174e3ebdc24d1a021c498534906eb5e", kill_on_drop: false }`
[INFO] [stdout] f4a6593578cd355e44c87d0ba1a2b85ad174e3ebdc24d1a021c498534906eb5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+18fb860b8a8e7ca508746882328061d0fe352543" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2ccf19352aefa0cebe9b863fcad6a0ad77ed977319b12cfb095993c433a72fd
[INFO] running `Command { std: "docker" "start" "-a" "c2ccf19352aefa0cebe9b863fcad6a0ad77ed977319b12cfb095993c433a72fd", kill_on_drop: false }`
[INFO] [stderr]     Checking mycc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `type_to_size`
[INFO] [stdout]  --> src/parser.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ty::{Type, type_of_node, type_to_size};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `type_to_size`
[INFO] [stdout]  --> src/parser.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ty::{Type, type_of_node, type_to_size};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_index` is never read
[INFO] [stdout]   --> src/tokenizer.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Token<'a>{
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub index : usize,
[INFO] [stdout] 13 |     pub next_index : usize, 
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Array` is never constructed
[INFO] [stdout]  --> src/ty.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Type {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 5 |     Int, 
[INFO] [stdout] 6 |     Array,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parser.rs:147:41
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     map.insert(func_name.clone(), VarInfo { ty: node.ty.clone(), offset: -1});
[INFO] [stdout]     |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_index` is never read
[INFO] [stdout]   --> src/tokenizer.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Token<'a>{
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub index : usize,
[INFO] [stdout] 13 |     pub next_index : usize, 
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Array` is never constructed
[INFO] [stdout]  --> src/ty.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Type {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 5 |     Int, 
[INFO] [stdout] 6 |     Array,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parser.rs:147:41
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     map.insert(func_name.clone(), VarInfo { ty: node.ty.clone(), offset: -1});
[INFO] [stdout]     |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "c2ccf19352aefa0cebe9b863fcad6a0ad77ed977319b12cfb095993c433a72fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ccf19352aefa0cebe9b863fcad6a0ad77ed977319b12cfb095993c433a72fd", kill_on_drop: false }`
[INFO] [stdout] c2ccf19352aefa0cebe9b863fcad6a0ad77ed977319b12cfb095993c433a72fd