[INFO] updating cached repository https://github.com/mmmpa/rust_simple_bbs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5bf60ad7d850778580cb977500fb6f4b69e787df
[INFO] checking mmmpa/rust_simple_bbs against try#3ae4c050387df9f7fbb379ee90ce8bf05e566870 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmpa%2Frust_simple_bbs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmmpa/rust_simple_bbs on toolchain 3ae4c050387df9f7fbb379ee90ce8bf05e566870
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mmmpa/rust_simple_bbs
[INFO] finished tweaking git repo https://github.com/mmmpa/rust_simple_bbs
[INFO] tweaked toml for git repo https://github.com/mmmpa/rust_simple_bbs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mmmpa/rust_simple_bbs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4e2fed8c021e97b75188fc6cec9ea4f84ef11781f0875ee889d1e8d87c06708
[INFO] running `"docker" "start" "-a" "a4e2fed8c021e97b75188fc6cec9ea4f84ef11781f0875ee889d1e8d87c06708"`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]     Checking string v0.1.3
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[INFO] [stderr]    Compiling pulldown-cmark v0.4.0
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[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
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[INFO] [stderr]     Checking miniz_oxide v0.2.1
[INFO] [stderr]    Compiling libc v0.2.50
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[INFO] [stderr]    Compiling rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking mime v0.3.13
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[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.1
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[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.17
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
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[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.89
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[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/common_error.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde::{Deserialize, Serialize};
[INFO] [stderr]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stderr]  --> src/common_error.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::mem::replace;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IronError`
[INFO] [stderr]  --> src/middleware.rs:4:51
[INFO] [stderr]   |
[INFO] [stderr] 4 | use iron::{BeforeMiddleware, Request, IronResult, IronError, AfterMiddleware, Response, typemap};
[INFO] [stderr]   |                                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/common_error.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde::{Deserialize, Serialize};
[INFO] [stderr]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stderr]  --> src/common_error.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::mem::replace;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IronError`
[INFO] [stderr]  --> src/middleware.rs:4:51
[INFO] [stderr]   |
[INFO] [stderr] 4 | use iron::{BeforeMiddleware, Request, IronResult, IronError, AfterMiddleware, Response, typemap};
[INFO] [stderr]   |                                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::prelude`
[INFO] [stderr]  --> src/middleware.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use iron::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/common_error.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |             Err(e) => Err(CommonError::new_boxed(key, error)),
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::prelude`
[INFO] [stderr]  --> src/middleware.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use iron::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/common_error.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |             Err(e) => Err(CommonError::new_boxed(key, error)),
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `"docker" "inspect" "a4e2fed8c021e97b75188fc6cec9ea4f84ef11781f0875ee889d1e8d87c06708"`
[INFO] running `"docker" "rm" "-f" "a4e2fed8c021e97b75188fc6cec9ea4f84ef11781f0875ee889d1e8d87c06708"`
[INFO] [stdout] a4e2fed8c021e97b75188fc6cec9ea4f84ef11781f0875ee889d1e8d87c06708