[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 try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[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-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Likey00/rucs-planner on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLikey00%2Frucs-planner" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[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-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Likey00/rucs-planner on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a51d53681cb52a4cb2d164d77caf219df748dffa83382f923ce4d9e6aeef9b07
[INFO] running `Command { std: "docker" "start" "-a" "a51d53681cb52a4cb2d164d77caf219df748dffa83382f923ce4d9e6aeef9b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a51d53681cb52a4cb2d164d77caf219df748dffa83382f923ce4d9e6aeef9b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a51d53681cb52a4cb2d164d77caf219df748dffa83382f923ce4d9e6aeef9b07", kill_on_drop: false }`
[INFO] [stdout] a51d53681cb52a4cb2d164d77caf219df748dffa83382f923ce4d9e6aeef9b07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca9f1d594288a96a2187f697e24461098dcf0fad63f6c2ec817bc7aecfcc56e5
[INFO] running `Command { std: "docker" "start" "-a" "ca9f1d594288a96a2187f697e24461098dcf0fad63f6c2ec817bc7aecfcc56e5", kill_on_drop: false }`
[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 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Major` and `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`, and `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 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Major` and `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`, and `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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ScheduledClass` is never constructed
[INFO] [stdout]  --> src/back_end/schedule.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ScheduledClass {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[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: struct `Semester` is never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Semester {
[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: enum `Season` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Season {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_num` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Season {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 56 |     fn to_num(&self) -> i32 {
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ScheduledClass` is never constructed
[INFO] [stdout]  --> src/back_end/schedule.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ScheduledClass {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[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: struct `Semester` is never constructed
[INFO] [stdout]   --> src/back_end/schedule.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Semester {
[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: enum `Season` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Season {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_num` is never used
[INFO] [stdout]   --> src/back_end/schedule.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Season {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 56 |     fn to_num(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.90s
[INFO] running `Command { std: "docker" "inspect" "ca9f1d594288a96a2187f697e24461098dcf0fad63f6c2ec817bc7aecfcc56e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9f1d594288a96a2187f697e24461098dcf0fad63f6c2ec817bc7aecfcc56e5", kill_on_drop: false }`
[INFO] [stdout] ca9f1d594288a96a2187f697e24461098dcf0fad63f6c2ec817bc7aecfcc56e5