[INFO] cloning repository https://github.com/dreamerldq/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dreamerldq/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamerldq%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamerldq%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 126108aa23f9d6566133883ba782bb81311191a7
[INFO] checking dreamerldq/learning-rust against try#fa4dd1f19bfeb3fd235dc7f1406c42404436bef5 for pr-145108-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamerldq%2Flearning-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/dreamerldq/learning-rust
[INFO] finished tweaking git repo https://github.com/dreamerldq/learning-rust
[INFO] tweaked toml for git repo https://github.com/dreamerldq/learning-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dreamerldq/learning-rust on toolchain fa4dd1f19bfeb3fd235dc7f1406c42404436bef5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dreamerldq/learning-rust 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" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking dreamerldq/learning-rust against try#fa4dd1f19bfeb3fd235dc7f1406c42404436bef5 for pr-145108-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamerldq%2Flearning-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/dreamerldq/learning-rust
[INFO] finished tweaking git repo https://github.com/dreamerldq/learning-rust
[INFO] tweaked toml for git repo https://github.com/dreamerldq/learning-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dreamerldq/learning-rust on toolchain fa4dd1f19bfeb3fd235dc7f1406c42404436bef5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dreamerldq/learning-rust 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" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.1
[INFO] [stderr]   Downloaded html2md v0.2.13
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.4
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.8
[INFO] [stderr]   Downloaded xml5ever v0.16.2
[INFO] [stderr]   Downloaded markup5ever_rcdom v0.1.0
[INFO] [stderr]   Downloaded syn v1.0.89
[INFO] [stderr]   Downloaded combine v4.6.3
[INFO] [stderr]   Downloaded image v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f6614c05f61321db0e010763a5cba686dade75884d8555b2fd59f61ead89f7e
[INFO] running `Command { std: "docker" "start" "-a" "5f6614c05f61321db0e010763a5cba686dade75884d8555b2fd59f61ead89f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f6614c05f61321db0e010763a5cba686dade75884d8555b2fd59f61ead89f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f6614c05f61321db0e010763a5cba686dade75884d8555b2fd59f61ead89f7e", kill_on_drop: false }`
[INFO] [stdout] 5f6614c05f61321db0e010763a5cba686dade75884d8555b2fd59f61ead89f7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00ecdc3ff7e42bfbf85510120ca4eb835621ac5f39f13e20aaffc218c155b5fb
[INFO] running `Command { std: "docker" "start" "-a" "00ecdc3ff7e42bfbf85510120ca4eb835621ac5f39f13e20aaffc218c155b5fb", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking num_cpus v1.13.1
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[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking itoa v1.0.1
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[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking string_cache v0.8.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking xml5ever v0.16.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking result v0.1.0 (/opt/rustwide/workdir/result)
[INFO] [stderr]     Checking world_hello v0.1.0 (/opt/rustwide/workdir/learning)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> result/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `id` in this scope
[INFO] [stdout]   --> result/src/main.rs:44:48
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn read_username_from_file() -> Result<String, id::Error> {
[INFO] [stdout]    |                                                ^^ use of unresolved module or unlinked crate `id`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `id`, use `cargo add id` to add it to your `Cargo.toml`
[INFO] [stdout] help: a builtin type with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 44 - fn read_username_from_file() -> Result<String, id::Error> {
[INFO] [stdout] 44 + fn read_username_from_file() -> Result<String, i8::Error> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `result` (bin "result" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> learning/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     never_return();
[INFO] [stdout]   |     -------------- any code following this expression is unreachable
[INFO] [stdout] 8 |     assert_eq!(s, 3);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s = sum(x, y);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00ecdc3ff7e42bfbf85510120ca4eb835621ac5f39f13e20aaffc218c155b5fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00ecdc3ff7e42bfbf85510120ca4eb835621ac5f39f13e20aaffc218c155b5fb", kill_on_drop: false }`
[INFO] [stdout] 00ecdc3ff7e42bfbf85510120ca4eb835621ac5f39f13e20aaffc218c155b5fb