[INFO] cloning repository https://github.com/sokket/hasher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sokket/hasher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsokket%2Fhasher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsokket%2Fhasher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b7167b6cfe85a52a56f0bfb13d7b59dd1fbf7c2
[INFO] building sokket/hasher against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsokket%2Fhasher" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sokket/hasher on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sokket/hasher
[INFO] finished tweaking git repo https://github.com/sokket/hasher
[INFO] tweaked toml for git repo https://github.com/sokket/hasher written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sokket/hasher 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b77ba87455faa3468db034304338beb0b8f2ec284260b4a9460c25c566e7bde
[INFO] running `Command { std: "docker" "start" "-a" "2b77ba87455faa3468db034304338beb0b8f2ec284260b4a9460c25c566e7bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b77ba87455faa3468db034304338beb0b8f2ec284260b4a9460c25c566e7bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b77ba87455faa3468db034304338beb0b8f2ec284260b4a9460c25c566e7bde", kill_on_drop: false }`
[INFO] [stdout] 2b77ba87455faa3468db034304338beb0b8f2ec284260b4a9460c25c566e7bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8e83ae4dc1494a628b9a1ab907c793de8d4d722f62cefe28ad54d68dfe896af
[INFO] running `Command { std: "docker" "start" "-a" "c8e83ae4dc1494a628b9a1ab907c793de8d4d722f62cefe28ad54d68dfe896af", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling blake2b_simd v0.5.11
[INFO] [stderr]    Compiling rust-argon2 v0.8.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling untitled2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::hasher::Hasher`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::hasher::Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hasher` is never constructed
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct Hasher<'a> {
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `salt_gen` is never used
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn salt_gen(salt_len: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `create`, `hash`, and `check` are never used
[INFO] [stdout]   --> src/main.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 21 |     impl Hasher<'_> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 22 |         pub fn create() -> Self {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |         pub fn hash(&self, password : String) -> String {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |         pub fn check(&self, hash: String, password : String) -> bool {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.23s
[INFO] running `Command { std: "docker" "inspect" "c8e83ae4dc1494a628b9a1ab907c793de8d4d722f62cefe28ad54d68dfe896af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e83ae4dc1494a628b9a1ab907c793de8d4d722f62cefe28ad54d68dfe896af", kill_on_drop: false }`
[INFO] [stdout] c8e83ae4dc1494a628b9a1ab907c793de8d4d722f62cefe28ad54d68dfe896af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1e058c6d325e3c4d7ad972a20541f28212f16aa5be213a2d36a5d884c078ffb
[INFO] running `Command { std: "docker" "start" "-a" "c1e058c6d325e3c4d7ad972a20541f28212f16aa5be213a2d36a5d884c078ffb", kill_on_drop: false }`
[INFO] [stderr]    Compiling untitled2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::hasher::Hasher`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::hasher::Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hasher` is never constructed
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct Hasher<'a> {
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `salt_gen` is never used
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn salt_gen(salt_len: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `create`, `hash`, and `check` are never used
[INFO] [stdout]   --> src/main.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 21 |     impl Hasher<'_> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 22 |         pub fn create() -> Self {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |         pub fn hash(&self, password : String) -> String {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |         pub fn check(&self, hash: String, password : String) -> bool {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "c1e058c6d325e3c4d7ad972a20541f28212f16aa5be213a2d36a5d884c078ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1e058c6d325e3c4d7ad972a20541f28212f16aa5be213a2d36a5d884c078ffb", kill_on_drop: false }`
[INFO] [stdout] c1e058c6d325e3c4d7ad972a20541f28212f16aa5be213a2d36a5d884c078ffb