[INFO] cloning repository https://github.com/lsaether/iching
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lsaether/iching" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fiching", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fiching'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3523e21acddbffc00c356d676dd619a9384cf7b
[INFO] testing lsaether/iching against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fiching" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lsaether/iching on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lsaether/iching
[INFO] finished tweaking git repo https://github.com/lsaether/iching
[INFO] tweaked toml for git repo https://github.com/lsaether/iching written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lsaether/iching already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c97d0eb33c7e7b7bdaa0b6f1a652d2ac91906be69378eae38e6773122a4df0e0
[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" "c97d0eb33c7e7b7bdaa0b6f1a652d2ac91906be69378eae38e6773122a4df0e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c97d0eb33c7e7b7bdaa0b6f1a652d2ac91906be69378eae38e6773122a4df0e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c97d0eb33c7e7b7bdaa0b6f1a652d2ac91906be69378eae38e6773122a4df0e0", kill_on_drop: false }`
[INFO] [stdout] c97d0eb33c7e7b7bdaa0b6f1a652d2ac91906be69378eae38e6773122a4df0e0
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 384092da9c3b20ef5d79ff28c33beb13e093ae13bf26e01071d8ad11a0a3d7ac
[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" "384092da9c3b20ef5d79ff28c33beb13e093ae13bf26e01071d8ad11a0a3d7ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling iching v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let found = contents.find(&search_string).unwrap();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:205:53
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut res = env::vars().filter(|(key, value)| {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pager`
[INFO] [stdout]    --> src/main.rs:210:21
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let (_, pager) = res.nth(0).unwrap();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_pager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.46s
[INFO] running `Command { std: "docker" "inspect" "384092da9c3b20ef5d79ff28c33beb13e093ae13bf26e01071d8ad11a0a3d7ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384092da9c3b20ef5d79ff28c33beb13e093ae13bf26e01071d8ad11a0a3d7ac", kill_on_drop: false }`
[INFO] [stdout] 384092da9c3b20ef5d79ff28c33beb13e093ae13bf26e01071d8ad11a0a3d7ac
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5e6bb26c2d28a62e813b34228acc1e635c01dce05c7dc3ca56edd1666a1fcf4
[INFO] running `Command { std: "docker" "start" "-a" "f5e6bb26c2d28a62e813b34228acc1e635c01dce05c7dc3ca56edd1666a1fcf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling iching v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let found = contents.find(&search_string).unwrap();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:205:53
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut res = env::vars().filter(|(key, value)| {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pager`
[INFO] [stdout]    --> src/main.rs:210:21
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let (_, pager) = res.nth(0).unwrap();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_pager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/iching-819cac676ec2deb5)
[INFO] running `Command { std: "docker" "inspect" "f5e6bb26c2d28a62e813b34228acc1e635c01dce05c7dc3ca56edd1666a1fcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5e6bb26c2d28a62e813b34228acc1e635c01dce05c7dc3ca56edd1666a1fcf4", kill_on_drop: false }`
[INFO] [stdout] f5e6bb26c2d28a62e813b34228acc1e635c01dce05c7dc3ca56edd1666a1fcf4
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 924598d95896f7fc53458f8415c7cef9c0b7d89bb4abc9f482b2a3a909af984e
[INFO] running `Command { std: "docker" "start" "-a" "924598d95896f7fc53458f8415c7cef9c0b7d89bb4abc9f482b2a3a909af984e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `found`
[INFO] [stderr]    --> src/main.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |     let found = contents.find(&search_string).unwrap();
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/main.rs:205:53
[INFO] [stderr]     |
[INFO] [stderr] 205 |             let mut res = env::vars().filter(|(key, value)| {
[INFO] [stderr]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pager`
[INFO] [stderr]    --> src/main.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |             let (_, pager) = res.nth(0).unwrap();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_pager`
[INFO] [stderr] 
[INFO] [stderr] warning: `iching` (bin "iching" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/iching-819cac676ec2deb5)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "924598d95896f7fc53458f8415c7cef9c0b7d89bb4abc9f482b2a3a909af984e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924598d95896f7fc53458f8415c7cef9c0b7d89bb4abc9f482b2a3a909af984e", kill_on_drop: false }`
[INFO] [stdout] 924598d95896f7fc53458f8415c7cef9c0b7d89bb4abc9f482b2a3a909af984e