[INFO] cloning repository https://github.com/voidforall/rust-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/voidforall/rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 105eccd56332299aa6508c47ae68347a88fdfd26
[INFO] checking voidforall/rust-exercises against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/voidforall/rust-exercises on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] finished tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] tweaked toml for git repo https://github.com/voidforall/rust-exercises written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/voidforall/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
[INFO] [stderr] candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mdbook v0.4.40`
[INFO] [stderr]     ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`
[INFO] checking voidforall/rust-exercises against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/voidforall/rust-exercises on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] finished tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] tweaked toml for git repo https://github.com/voidforall/rust-exercises written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/voidforall/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
[INFO] [stderr] candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mdbook v0.4.40`
[INFO] [stderr]     ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`
[INFO] checking voidforall/rust-exercises against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/voidforall/rust-exercises on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] finished tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] tweaked toml for git repo https://github.com/voidforall/rust-exercises written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/voidforall/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
[INFO] [stderr] candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mdbook v0.4.40`
[INFO] [stderr]     ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`
[INFO] checking voidforall/rust-exercises against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/voidforall/rust-exercises on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] finished tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] tweaked toml for git repo https://github.com/voidforall/rust-exercises written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/voidforall/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
[INFO] [stderr] candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mdbook v0.4.40`
[INFO] [stderr]     ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`
[INFO] checking voidforall/rust-exercises against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidforall%2Frust-exercises" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/voidforall/rust-exercises on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] finished tweaking git repo https://github.com/voidforall/rust-exercises
[INFO] tweaked toml for git repo https://github.com/voidforall/rust-exercises written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/voidforall/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
[INFO] [stderr] candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mdbook v0.4.40`
[INFO] [stderr]     ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`


command failed: exit status: 101

    Updating crates.io index
error: failed to select a version for the requirement `elasticlunr-rs = "^3.0.2"` (locked to 3.0.2)
candidate versions found which didn't match: 2.1.3, 2.1.2, 2.1.1, ...
location searched: crates.io index
required by package `mdbook v0.4.40`
    ... which satisfies dependency `mdbook = "^0.4.40"` (locked to 0.4.40) of package `mdbook-exercise-linker v0.1.0 (/workspace/builds/worker-3-tc2/source/helpers/mdbook-exercise-linker)`