[INFO] cloning repository https://github.com/killercup/recycle_ebooks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/killercup/recycle_ebooks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frecycle_ebooks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frecycle_ebooks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47dbef1e6aa2385f5b048bf49cfd8058244a1606
[INFO] checking killercup/recycle_ebooks against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frecycle_ebooks" "/workspace/builds/worker-89/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-89/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/killercup/recycle_ebooks on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/killercup/recycle_ebooks
[INFO] finished tweaking git repo https://github.com/killercup/recycle_ebooks
[INFO] tweaked toml for git repo https://github.com/killercup/recycle_ebooks written to /workspace/builds/worker-89/source/Cargo.toml
[INFO] crate git repo https://github.com/killercup/recycle_ebooks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d4d58fb3b970fd43470e950c953f5c2e00b0dd20bd9d972a30adb50fea6baad
[INFO] running `Command { std: "docker" "start" "-a" "2d4d58fb3b970fd43470e950c953f5c2e00b0dd20bd9d972a30adb50fea6baad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d4d58fb3b970fd43470e950c953f5c2e00b0dd20bd9d972a30adb50fea6baad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d4d58fb3b970fd43470e950c953f5c2e00b0dd20bd9d972a30adb50fea6baad", kill_on_drop: false }`
[INFO] [stdout] 2d4d58fb3b970fd43470e950c953f5c2e00b0dd20bd9d972a30adb50fea6baad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06296d6aba714a4b0335f785d686fabb3420dcc8b169d45116ab3472b6e4f55d
[INFO] running `Command { std: "docker" "start" "-a" "06296d6aba714a4b0335f785d686fabb3420dcc8b169d45116ab3472b6e4f55d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.14
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.4
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking markov v0.0.32
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking rayon v0.4.0
[INFO] [stderr]     Checking regex v0.1.73
[INFO] [stderr]     Checking dotenv v0.8.0
[INFO] [stderr]     Checking recycle_ebooks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `ENGLISH`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / const ENGLISH: &'static [&'static str; 3] = &[
[INFO] [stdout] 19 | |     "conquest_of_bread",
[INFO] [stdout] 20 | |     "structure-and-interpretation-of-computer-programs",
[INFO] [stdout] 21 | |     "alice_oz",
[INFO] [stdout] 22 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ENGLISH`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / const ENGLISH: &'static [&'static str; 3] = &[
[INFO] [stdout] 19 | |     "conquest_of_bread",
[INFO] [stdout] 20 | |     "structure-and-interpretation-of-computer-programs",
[INFO] [stdout] 21 | |     "alice_oz",
[INFO] [stdout] 22 | | ];
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.02s
[INFO] running `Command { std: "docker" "inspect" "06296d6aba714a4b0335f785d686fabb3420dcc8b169d45116ab3472b6e4f55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06296d6aba714a4b0335f785d686fabb3420dcc8b169d45116ab3472b6e4f55d", kill_on_drop: false }`
[INFO] [stdout] 06296d6aba714a4b0335f785d686fabb3420dcc8b169d45116ab3472b6e4f55d