[INFO] cloning repository https://github.com/Likey00/rucs-planner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Likey00/rucs-planner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9cf1da797a422f638ea93fe2d914839f442f993
[INFO] checking Likey00/rucs-planner against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Likey00/rucs-planner on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] finished tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] tweaked toml for git repo https://github.com/Likey00/rucs-planner written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Likey00/rucs-planner 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "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 Likey00/rucs-planner against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Likey00/rucs-planner on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] finished tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] tweaked toml for git repo https://github.com/Likey00/rucs-planner written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Likey00/rucs-planner 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "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 Likey00/rucs-planner against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Likey00/rucs-planner on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] finished tweaking git repo https://github.com/Likey00/rucs-planner
[INFO] tweaked toml for git repo https://github.com/Likey00/rucs-planner written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Likey00/rucs-planner 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2a0abb6796ec88d5c5b5a543cd489ce65793219723c658e9a234e84caeeedbd
[INFO] running `Command { std: "docker" "start" "-a" "d2a0abb6796ec88d5c5b5a543cd489ce65793219723c658e9a234e84caeeedbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2a0abb6796ec88d5c5b5a543cd489ce65793219723c658e9a234e84caeeedbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2a0abb6796ec88d5c5b5a543cd489ce65793219723c658e9a234e84caeeedbd", kill_on_drop: false }`
[INFO] [stdout] d2a0abb6796ec88d5c5b5a543cd489ce65793219723c658e9a234e84caeeedbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 584efba444d079b09a9fbc4ec00b77d560a1ee8b7f31c1757a30ed490298f05e
[INFO] running `Command { std: "docker" "start" "-a" "584efba444d079b09a9fbc4ec00b77d560a1ee8b7f31c1757a30ed490298f05e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking course-scheduler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/back_end/schedule.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/back_end/schedule.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Major`, `Req`
[INFO] [stdout]  --> src/back_end/schedule.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::back_end::major::{Major, Class, Req};
[INFO] [stdout]   |                              ^^^^^         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Major`, `Req`
[INFO] [stdout]  --> src/back_end/schedule.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::back_end::major::{Major, Class, Req};
[INFO] [stdout]   |                              ^^^^^         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Class`, `Major`, `Req`
[INFO] [stdout]  --> src/lib.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use back_end::major::{self, Major, Class, Req};
[INFO] [stdout]   |                             ^^^^^  ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Class`, `Major`, `Req`
[INFO] [stdout]  --> src/lib.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use back_end::major::{self, Major, Class, Req};
[INFO] [stdout]   |                             ^^^^^  ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `major_reqs`, `all_reqs`, and `all_classes` are never read
[INFO] [stdout]   --> src/back_end/major.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Major {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 20 |     major_reqs: Req,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 21 |     all_reqs: HashMap<String, Req>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 22 |     all_classes: HashMap<String, Class>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Major` 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: struct `Schedule` is never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Schedule {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Semester {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 25 |     fn new(season: Season, year: u32) -> Semester {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Summer`, `Fall`, and `Spring` are never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Season {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 50 |     Summer,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 51 |     Fall,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     Spring,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `major_reqs`, `all_reqs`, and `all_classes` are never read
[INFO] [stdout]   --> src/back_end/major.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Major {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 20 |     major_reqs: Req,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 21 |     all_reqs: HashMap<String, Req>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 22 |     all_classes: HashMap<String, Class>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Major` 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: struct `Schedule` is never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Schedule {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Semester {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 25 |     fn new(season: Season, year: u32) -> Semester {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Summer`, `Fall`, and `Spring` are never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Season {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 50 |     Summer,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 51 |     Fall,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     Spring,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.83s
[INFO] running `Command { std: "docker" "inspect" "584efba444d079b09a9fbc4ec00b77d560a1ee8b7f31c1757a30ed490298f05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584efba444d079b09a9fbc4ec00b77d560a1ee8b7f31c1757a30ed490298f05e", kill_on_drop: false }`
[INFO] [stdout] 584efba444d079b09a9fbc4ec00b77d560a1ee8b7f31c1757a30ed490298f05e
