[INFO] cloning repository https://github.com/huangqian/rust-in-action
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huangqian/rust-in-action" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f36881cede964f6008c95f60cb1004db4fba9cc2
[INFO] checking huangqian/rust-in-action against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huangqian/rust-in-action on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] tweaked toml for git repo https://github.com/huangqian/rust-in-action written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/huangqian/rust-in-action already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atoi v0.3.1
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[INFO] [stderr]   Downloaded mysql_common v0.15.0
[INFO] [stderr]   Downloaded num-bigint v0.2.1
[INFO] [stderr]   Downloaded block-padding v0.1.3
[INFO] [stderr]   Downloaded ucd-util v0.1.2
[INFO] [stderr]   Downloaded combine v3.5.2
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[INFO] [stderr]   Downloaded croaring v0.4.1
[INFO] [stderr]   Downloaded croaring-sys v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05e179871dbba0a8e9cbbca8b0350d793c67e4a229f6317f4d702dc8cd7086c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "05e179871dbba0a8e9cbbca8b0350d793c67e4a229f6317f4d702dc8cd7086c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05e179871dbba0a8e9cbbca8b0350d793c67e4a229f6317f4d702dc8cd7086c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05e179871dbba0a8e9cbbca8b0350d793c67e4a229f6317f4d702dc8cd7086c0", kill_on_drop: false }`
[INFO] [stdout] 05e179871dbba0a8e9cbbca8b0350d793c67e4a229f6317f4d702dc8cd7086c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e7a398e62b190ae9828c59904c5a852fd38fc34dc38a6d4e3b407cde24cb729
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6e7a398e62b190ae9828c59904c5a852fd38fc34dc38a6d4e3b407cde24cb729", 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] [stderr]    Compiling libc v0.2.50
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[INFO] [stderr]     Checking cfg-if v0.1.5
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[INFO] [stderr]     Checking rand v0.5.5
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[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]     Checking combine v3.5.2
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking atoi v0.3.1
[INFO] [stderr]     Checking url v1.7.2
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[INFO] [stderr]     Checking flate2 v1.0.4
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[INFO] [stderr]    Compiling backtrace v0.3.12
[INFO] [stderr]     Checking twox-hash v1.1.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
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[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking serde_json v1.0.32
[INFO] [stderr]     Checking mysql_common v0.15.0
[INFO] [stderr]    Compiling croaring-sys v0.4.1
[INFO] [stderr]     Checking croaring v0.4.1
[INFO] [stderr]     Checking rust-in-action v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]  --> examples/enums.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum IpAddrKind{
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]  --> examples/compile-time-function-execution.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let arr = [0, init_len()];
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `redis::Commands`
[INFO] [stdout]  --> examples/redis.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use redis::Commands;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/mysql.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OptsBuilder`, `Opts`, `Pool`, `Value`, `from_value`
[INFO] [stdout]  --> examples/mysql.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mysql::{from_value, Opts, OptsBuilder, Pool, Value};
[INFO] [stdout]   |             ^^^^^^^^^^  ^^^^  ^^^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `redis`
[INFO] [stdout]   --> examples/redis.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(proc_macro_hygiene, decl_macro)]
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | extern crate redis;
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/redis.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `mysql`
[INFO] [stdout]   --> examples/mysql.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / extern crate core;
[INFO] [stdout] 2  | | #[macro_use]
[INFO] [stdout] 3  | | extern crate mysql;
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |     }
[INFO] [stdout] 88 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/mysql.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `box`
[INFO] [stdout]   --> examples/box.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #[cfg(test)]
[INFO] [stdout] 2  | | mod box_test {
[INFO] [stdout] 3  | |     use box_test::List::{Cons, Nil};
[INFO] [stdout] 4  | |     use MyBox;
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     }
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/box.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-in-action`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Structure` in this scope
[INFO] [stdout]  --> examples/structs.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     println!("{:?}", Structure(3));
[INFO] [stdout]   |                      ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found struct `LinkedList`
[INFO] [stdout]   --> examples/collection/list.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  |       LinkedList
[INFO] [stdout]    |       ^^^^^^^^^^ help: use struct literal syntax instead: `LinkedList { head: val, tail: val, len: val, marker: val }`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_case`
[INFO] [stdout]   --> examples/loop.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn while_case(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_demo_2`
[INFO] [stdout]   --> examples/loop.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn while_demo_2(){
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user1`
[INFO] [stdout]   --> src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let user1 = User{
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct User{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `struct_example`
[INFO] [stdout]   --> src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn struct_example(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6e7a398e62b190ae9828c59904c5a852fd38fc34dc38a6d4e3b407cde24cb729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e7a398e62b190ae9828c59904c5a852fd38fc34dc38a6d4e3b407cde24cb729", kill_on_drop: false }`
[INFO] [stdout] 6e7a398e62b190ae9828c59904c5a852fd38fc34dc38a6d4e3b407cde24cb729