[INFO] cloning repository https://github.com/tyrchen/rust-training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tyrchen/rust-training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyrchen%2Frust-training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyrchen%2Frust-training'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47e613e078a70e1fefdc9c58ffbaaabb746dfac4
[INFO] testing tyrchen/rust-training against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyrchen%2Frust-training" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  99% (340/343)
Updating files: 100% (343/343)
Updating files: 100% (343/343), done.
[INFO] validating manifest of git repo https://github.com/tyrchen/rust-training on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tyrchen/rust-training
[INFO] finished tweaking git repo https://github.com/tyrchen/rust-training
[INFO] tweaked toml for git repo https://github.com/tyrchen/rust-training written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/tyrchen/rust-training already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/atroche/rust-headless-chrome`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sync_wrapper v0.1.1
[INFO] [stderr]   Downloaded http-range-header v0.3.0
[INFO] [stderr]   Downloaded polyval v0.5.1
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[INFO] [stderr]   Downloaded simple_asn1 v0.6.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be2b8ef8612a8603908d01c81357a3315e30da111ebf8f4a0bb3ff092d6ff718
[INFO] running `Command { std: "docker" "start" "-a" "be2b8ef8612a8603908d01c81357a3315e30da111ebf8f4a0bb3ff092d6ff718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be2b8ef8612a8603908d01c81357a3315e30da111ebf8f4a0bb3ff092d6ff718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be2b8ef8612a8603908d01c81357a3315e30da111ebf8f4a0bb3ff092d6ff718", kill_on_drop: false }`
[INFO] [stdout] be2b8ef8612a8603908d01c81357a3315e30da111ebf8f4a0bb3ff092d6ff718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaa76b8581cd56fbcb015a7082070e90606cdcb82db9a8fb4ee940ff168fc400
[INFO] running `Command { std: "docker" "start" "-a" "aaa76b8581cd56fbcb015a7082070e90606cdcb82db9a8fb4ee940ff168fc400", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `client` in package `pow v0.1.0 (/opt/rustwide/workdir/live_coding/pow)` has the same output filename as the bin target `client` in package `kv v0.1.0 (/opt/rustwide/workdir/live_coding/kv)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/client
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `server` in package `pow v0.1.0 (/opt/rustwide/workdir/live_coding/pow)` has the same output filename as the bin target `server` in package `kv v0.1.0 (/opt/rustwide/workdir/live_coding/kv)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/server
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `client` in package `tokio-server v0.1.0 (/opt/rustwide/workdir/code/tokio-server)` has the same output filename as the bin target `client` in package `pow v0.1.0 (/opt/rustwide/workdir/live_coding/pow)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/client
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `server` in package `tokio-server v0.1.0 (/opt/rustwide/workdir/code/tokio-server)` has the same output filename as the bin target `server` in package `pow v0.1.0 (/opt/rustwide/workdir/live_coding/pow)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/server
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
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[INFO] [stderr]    Compiling matchit v0.4.6
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[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strtok v0.1.0 (/opt/rustwide/workdir/code/strtok)
[INFO] [stderr]    Compiling lifetime v0.1.0 (/opt/rustwide/workdir/code/lifetime)
[INFO] [stderr]    Compiling simple_asm v0.1.0 (/opt/rustwide/workdir/code/simple_asm)
[INFO] [stderr]    Compiling gp v0.1.0 (/opt/rustwide/workdir/code/gp)
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir/live_coding/hello_world)
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling sharded-slab v0.1.1
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[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling bytestring v1.0.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling pem v1.0.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
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[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stdout] warning: unused variable: `authenticated`
[INFO] [stdout]  --> live_coding/hello_world/src/value_tour.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let authenticated = true;
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authenticated`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `total` is assigned to, but never used
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut total = 0usize;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_total` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     total += 1;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_map`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let my_map = &mut map;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn print_map(map: &HashMap<String, String>) {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:46:15
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn insert_map(map: &mut HashMap<String, String>) {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Gender`
[INFO] [stdout]  --> live_coding/hello_world/src/types.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ConnectionState`
[INFO] [stdout]  --> live_coding/hello_world/src/types.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ConnectionState {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HalfOpen`
[INFO] [stdout]   --> live_coding/hello_world/src/types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct HalfOpen {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FullSession`
[INFO] [stdout]   --> live_coding/hello_world/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct FullSession {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]   --> live_coding/hello_world/src/types.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_tour`
[INFO] [stdout]  --> live_coding/hello_world/src/value_tour.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn value_tour() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_my_name`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn print_my_name(name: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_map`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn print_map(map: &HashMap<String, String>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert_map`
[INFO] [stdout]   --> live_coding/hello_world/src/value_tour.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn insert_map(map: &mut HashMap<String, String>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling neon-runtime v0.8.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.25/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=71dab053db1b6952 -C extra-filename=-71dab053db1b6952 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> code/lifetime/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     name: &'a str,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> code/lifetime/src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]  --> code/lifetime/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     age: u8,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> code/lifetime/src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> code/lifetime/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(name: &'a str, age: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "aaa76b8581cd56fbcb015a7082070e90606cdcb82db9a8fb4ee940ff168fc400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaa76b8581cd56fbcb015a7082070e90606cdcb82db9a8fb4ee940ff168fc400", kill_on_drop: false }`
[INFO] [stdout] aaa76b8581cd56fbcb015a7082070e90606cdcb82db9a8fb4ee940ff168fc400