[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-push.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn/hooks/pre-push.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/push-to-checkout.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn/hooks/push-to-checkout.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 8)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 9)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 10)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 11)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 12)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 13)
[INFO] cloning repository https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cspr-rad/prusti-lunchnlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7683df874edb46e134c85235f3b41c17572c55d
[INFO] checking cspr-rad/prusti-lunchnlearn against try#b2fb67b8b6007ced9ad3f3b752a6fec899e7859c for pr-138915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcspr-rad%2Fprusti-lunchnlearn" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cspr-rad/prusti-lunchnlearn on toolchain b2fb67b8b6007ced9ad3f3b752a6fec899e7859c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] finished tweaking git repo https://github.com/cspr-rad/prusti-lunchnlearn
[INFO] tweaked toml for git repo https://github.com/cspr-rad/prusti-lunchnlearn written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cspr-rad/prusti-lunchnlearn 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" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prusti-contracts v0.2.0
[INFO] [stderr]   Downloaded prusti-std v0.2.0
[INFO] [stderr]   Downloaded prusti-contracts-proc-macros v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b7b81630c1fa10dc17386909d105c0a56500d850f4324130a0245ac691f4ac7
[INFO] running `Command { std: "docker" "start" "-a" "5b7b81630c1fa10dc17386909d105c0a56500d850f4324130a0245ac691f4ac7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b7b81630c1fa10dc17386909d105c0a56500d850f4324130a0245ac691f4ac7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b7b81630c1fa10dc17386909d105c0a56500d850f4324130a0245ac691f4ac7", kill_on_drop: false }`
[INFO] [stdout] 5b7b81630c1fa10dc17386909d105c0a56500d850f4324130a0245ac691f4ac7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcf974381d8893879b9652a9cb6049974fb4cea2c3c1233a7b80fc41ac88f127
[INFO] running `Command { std: "docker" "start" "-a" "dcf974381d8893879b9652a9cb6049974fb4cea2c3c1233a7b80fc41ac88f127", kill_on_drop: false }`
[INFO] [stderr]    Compiling prusti-contracts-proc-macros v0.2.0
[INFO] [stderr]     Checking prusti-contracts v0.2.0
[INFO] [stderr]     Checking prusti-std v0.2.0
[INFO] [stderr]     Checking prusti-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl List {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn len(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl List {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn len(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "dcf974381d8893879b9652a9cb6049974fb4cea2c3c1233a7b80fc41ac88f127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf974381d8893879b9652a9cb6049974fb4cea2c3c1233a7b80fc41ac88f127", kill_on_drop: false }`
[INFO] [stdout] dcf974381d8893879b9652a9cb6049974fb4cea2c3c1233a7b80fc41ac88f127