[INFO] fetching crate light_merkle 0.1.0...
[INFO] testing light_merkle-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate light_merkle 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate light_merkle 0.1.0
[INFO] finished tweaking crates.io crate light_merkle 0.1.0
[INFO] tweaked toml for crates.io crate light_merkle 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate light_merkle 0.1.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1db932ae34c971a54cce53e4191ce43b7a3c813a3760c1ca190611655d900c4
[INFO] running `Command { std: "docker" "start" "-a" "c1db932ae34c971a54cce53e4191ce43b7a3c813a3760c1ca190611655d900c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1db932ae34c971a54cce53e4191ce43b7a3c813a3760c1ca190611655d900c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1db932ae34c971a54cce53e4191ce43b7a3c813a3760c1ca190611655d900c4", kill_on_drop: false }`
[INFO] [stdout] c1db932ae34c971a54cce53e4191ce43b7a3c813a3760c1ca190611655d900c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35cf054e66fdd1265e44c9db661c89355cefb899ca5c9260ee1869e8ebeb0786
[INFO] running `Command { std: "docker" "start" "-a" "35cf054e66fdd1265e44c9db661c89355cefb899ca5c9260ee1869e8ebeb0786", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling light_merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/light_merkle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/light_merkle.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.03s
[INFO] running `Command { std: "docker" "inspect" "35cf054e66fdd1265e44c9db661c89355cefb899ca5c9260ee1869e8ebeb0786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35cf054e66fdd1265e44c9db661c89355cefb899ca5c9260ee1869e8ebeb0786", kill_on_drop: false }`
[INFO] [stdout] 35cf054e66fdd1265e44c9db661c89355cefb899ca5c9260ee1869e8ebeb0786
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afe6bfdeb00432ce3ed264ef1fcb7570de06037623c5b73449dd6b0ac2af79eb
[INFO] running `Command { std: "docker" "start" "-a" "afe6bfdeb00432ce3ed264ef1fcb7570de06037623c5b73449dd6b0ac2af79eb", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/light_merkle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/light_merkle.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling light_merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/light_merkle.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "afe6bfdeb00432ce3ed264ef1fcb7570de06037623c5b73449dd6b0ac2af79eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afe6bfdeb00432ce3ed264ef1fcb7570de06037623c5b73449dd6b0ac2af79eb", kill_on_drop: false }`
[INFO] [stdout] afe6bfdeb00432ce3ed264ef1fcb7570de06037623c5b73449dd6b0ac2af79eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84b01884fecf9861b578cd39d21d3248bac9d9cf7ac8e041dd435467c32c3986
[INFO] running `Command { std: "docker" "start" "-a" "84b01884fecf9861b578cd39d21d3248bac9d9cf7ac8e041dd435467c32c3986", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `sha2::Digest`
[INFO] [stderr]  --> src/light_merkle.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sha2::Digest;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `hash` is never read
[INFO] [stderr]    --> src/light_merkle.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `light_merkle` (lib) generated 2 warnings
[INFO] [stderr] warning: `light_merkle` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/light_merkle-c104407b34a4f724)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test light_merkle::test::test_generate_invalid_merkle_tree_list_len_not_pow_two ... ok
[INFO] [stdout] test light_merkle::test::test_generate_invalid_merkle_tree_list_len_zero ... ok
[INFO] [stdout] test light_merkle::test::test_generate_proof_invalid_leaf ... ok
[INFO] [stdout] test light_merkle::test::test_verify_merkle_tree_any_hasher_instance ... ok
[INFO] [stderr]    Doc-tests light_merkle
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] [stdout] 
[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" "84b01884fecf9861b578cd39d21d3248bac9d9cf7ac8e041dd435467c32c3986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b01884fecf9861b578cd39d21d3248bac9d9cf7ac8e041dd435467c32c3986", kill_on_drop: false }`
[INFO] [stdout] 84b01884fecf9861b578cd39d21d3248bac9d9cf7ac8e041dd435467c32c3986